20159XXX / 2015‐32‐0XXX
20159XXX / 2015‐32‐0XXX
20159XXX / 2015‐32‐0XXX

SETC2015 Best Paper
SETC2015 High Quality Papers (9 Papers)
SAE Journal Paper (17 Papers)

SETC2015 Session Timetable
SETC2015 Session Timetable(20 minutes‐presentation and 10 minutes‐discussion / each paper)

Opening Ceremony & Keynote Speech (at Conference Hall, 12F)

9:10‐10:30

Networking Break

10:30‐11:00
Room

1004

1005
Lubricants
Tohru Nakazono
Brent Dohner
20159708 / 2015‐32‐0708
20159764 / 2015‐32‐0764

Diesel Engine Ⅰ
Keiya Nishida
Giovanni Vichi
20159710 / 2015‐32‐0710
20159715 / 2015‐32‐0715
20159754 / 2015‐32‐0754

Vehicle Dynamics & SafetyⅠ
Shigeru Fujii
Thomas Lagö
20159705 / 2015‐32‐0705
20159813 / 2015‐32‐0813
20159839 / 2015‐32‐0839

Diesel EngineⅡ
Yoshimitsu Kobashi
Giovanni Vichi
20159724 / 2015‐32‐0724
20159761 / 2015‐32‐0761
20159816 / 2015‐32‐0816
20159825 / 2015‐32‐0825
NVH Technology
Hiroshi Yano
Thomas Lagö
20159747 / 2015‐32‐0747
20159774 / 2015‐32‐0774
20159727 / 2015‐32‐0727

Vehicle Dynamics & SafetyⅡ
Masayuki Baba
Thomas Lagö
20159723 / 2015‐32‐0723
20159810 / 2015‐32‐0810
20159834 / 2015‐32‐0834
20159709 / 2015‐32‐0709

Alternative FuelsⅠ
Koji Yoshida
Brent Dohner
20159712 / 2015‐32‐0712
20159784 / 2015‐32‐0784
20159795 / 2015‐32‐0795
20159831 / 2015‐32‐0831
Alternative FuelsⅡ
Tohru Nakazono
Robert Kee
20159733 / 2015‐32‐0733
20159801 / 2015‐32‐0801

Advanced CombustionⅠ
Hiroya Ueda
Francesco Balduzzi
20159738 / 2015‐32‐0738
20159721 / 2015‐32‐0721

MaterialsⅠ
Hirotaka Kurita
Brent Dohner
20159743 / 2015‐32‐0743
20159720 / 2015‐32‐0720

Alternative Fuels Ⅲ
Koji Yoshida
Robert Kee
20159826 / 2015‐32‐0826
20159797 / 2015‐32‐0797

Advanced CombustionⅡ
Hiroya Ueda
Franz Winkler
20159771 / 2015‐32‐0771
20159796 / 2015‐32‐0796

MaterialsⅡ
Hirotaka Kurita
Brent Dohner
20159830 / 2015‐32‐0830
20159850 / 2015‐32‐0850

Tuesday, November 17

Chair
11:00‐12:00 Co‐Chair

Chair
Co‐Chair

Chair
Co‐Chair
16:00‐18:00

Wednesday, November 18

Chair
Co‐Chair

Chair
Co‐Chair

Two Stroke EngineⅡYuh Motoyama
Pierre Duret20159760 / 2015‐32‐0760
20159762 / 2015‐32‐0762
20159832 / 2015‐32‐0832
Collegiate Events
Takashi Mitome
Robert Kee
20159742 / 2015‐32‐0742
20159823 / 2015‐32‐0823
20159838 / 2015‐32‐0838
20159829 / 2015‐32‐0829
Measurement & SimulationⅠ
Tadao Okazaki
Giovanni Ferrara
20159717 / 2015‐32‐0717
20159804 / 2015‐32‐0804

Engine TechnologyⅠ
Satoshi Inoue
Patrick Pertl
20159701 / 2015‐32‐0701
20159713 / 2015‐32‐0713
20159809 / 2015‐32‐0809
20159808 / 2015‐32‐0808
Engine TechnologyⅡ
Yuh‐Yih Wu
Patrick Pertl
20159729 / 2015‐32‐0729
20159768 / 2015‐32‐0768
20159757 / 2015‐32‐0757

Measurement & SimulationⅡEngine Technology Ⅲ
Takahito Murase
Patrick Pertl
20159805 / 2015‐32‐0805
20159719 / 2015‐32‐0719
20159817 / 2015‐32‐0817

Hideyuki Ogawa
Giovanni Ferrara
20159711 / 2015‐32‐0711
20159728 / 2015‐32‐0728
20159748 / 2015‐32‐0748

Measurement & SimulationⅢ Hybrids, Electric Drives & Fuel Cells

Shigeru Fujii
Giovanni Ferrara
20159731 / 2015‐32‐0731
20159745 / 2015‐32‐0745

14:30‐15:15

Networking Break & Poster Session

15:15‐17:30

Plenary Session (at Room 1009, 10F)

8:30‐10:00

HCCIⅠ
Tatsuya Kuboyama
Giovanni Vichi
20159706 / 2015‐32‐0706
20159770 / 2015‐32‐0770
20159772 / 2015‐32‐0772

Chair
Co‐Chair

12:30‐14:00

EmissionsⅠ
Hiromi Deguchi
Leonid Tartakovsky
20159783 / 2015‐32‐0783
20159802 / 2015‐32‐0802
20159821 / 2015‐32‐0821

Yasuyuki Muramatsu
Robert Kee
20159740 / 2015‐32‐0740
20159753 / 2015‐32‐0753

Measurement & SimulationⅣ

Shigeru Fujii
Stephan Schmidt
20159811 / 2015‐32‐0811
20159739 / 2015‐32‐0739

Networking Break & Poster Session

10:00‐11:00

11:00‐12:30

Fuel Supply SystemsⅡ
Hideyuki Okumura
Tony Szczotka
20159767 / 2015‐32‐0767
20159773 / 2015‐32‐0773

Lunch (at Room 1001+1002+1003, 10F)

12:00‐13:30
Chair
13:30‐14:30 Co‐Chair

Thursday, November 19

Engine ControlsⅡ
Yutaka Nitta
Roland Kirchberger
20159752 / 2015‐32‐0752
20159819 / 2015‐32‐0819
20159843 / 2015‐32‐0843

Networking Break

10:00‐10:30

10:30‐12:00

1008
Fuel Supply SystemsⅠ
Hideyuki Okumura
Tony Szczotka
20159755 / 2015‐32‐0755
20159842 / 2015‐32‐0842

Networking Break & Poster Session

15:00‐16:00

8:30‐10:00

1007
Two Stroke EngineⅠYuh Motoyama
Pierre Duret20159702 / 2015‐32‐0702
20159716 / 2015‐32‐0716

Lunch (at Room 1001+1002+1003, 10F)

12:00‐13:30

13:30‐15:00

1006
Engine ControlsⅠ
Yutaka Nitta
Roland Kirchberger
20159788 / 2015‐32‐0788
20159749 / 2015‐32‐0749

Chair
Co‐Chair

Functional Safety
Takashi Mitome
Tony Szczotka
20159714 / 2015‐32‐0714
20159746 / 2015‐32‐0746
20159794 / 2015‐32‐0794

HCCIⅡ
Tatsuya Kuboyama
Francesco Balduzzi
20159790 / 2015‐32‐0790
20159807 / 2015‐32‐0807
20159847 / 2015‐32‐0847

EmissionsⅡ
Hiromi Deguchi
Leonid Tartakovsky
20159824 / 2015‐32‐0824
20159707 / 2015‐32‐0707

Measurement & SimulationⅤ

Tadao Okazaki
Stephan Schmidt
20159766 / 2015‐32‐0766
20159828 / 2015‐32‐0828
20159763 / 2015‐32‐0763

Vehicle Components
Masayuki Baba
Thomas Lagö
20159750 / 2015‐32‐0750
20159785 / 2015‐32‐0785
20159786 / 2015‐32‐0786

Lunch (at Room 1001+1002+1003, 10F), Awards & Closing Ceremony (at Room 1009, 10F)

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171005
11：00 - 12：00
Lubricants
Tohru Nakazono (LEMA / YANMAR Co., Ltd.)
Brent Dohner (The Lubrizol Corporation)

6. Paper No.(JSAE/SAE)

20159708 / 2015-32-0708
Unique Needs of Motorcycle and Scooter Lubricants and Proposed Solutions for More Effective
Performance Evaluation
Michael J Marcella (The Lubrizol Corporation)

7. Paper title

8. Authors (Affiliation)
9. Abstract
The operating conditions of a typical motorcycle are considerably different than those of a typical passenger car and thus requirean oil capable of handling the unique demands. One primary difference, wet clutch lubrication, is already addressed by thecurrent JASO four-stroke motorcycle engine oil specification (JASO T 903：2011). Another challenge for the oil is gear box
lubrication, which will be addressed in part with the addition of a gear protection test in the proposed 2016 revision to the JASO
specification. A third major difference between a motorcycle oil and passenger car oil is the more severe conditions an oil issubjected to within a motorcycle engine, due to higher temperatures, engine speeds and power densities.
Scooters, utilizing a transmission not lubricated by the crankcase oil, also place higher demands on an engine oil, once again due
to higher temperatures, engine speeds and power densities. However, because scooter oils do not need to lubricate a wet clutch
or protect gears, scooter oils can provide more fuel economy benefits than motorcycle oils, when properly formulated.
This study compares the piston deposit performance of motorcycle oils and passenger car oils in the API Sequence III Test andin a fired-engine motorcycle piston deposit evaluation. While the API Sequence III Test is certainly an effective tool for ensuring
passenger car motor oil piston deposit performance, the results show that some oils formulated to meet the needs of theSequence III test do not match the performance of motorcycle-specific oils in a motorcycle piston deposit evaluation….

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159764 / 2015-32-0764
Additive Technology for Superior and Unique Motorcycle Oil (SUMO)Pei Yi Lim (Infineum Singapore Pte Ltd.)In a market survey conducted in 2010 on major South East Asian cities, motorcycle users identified some of the most valued oilfeatures being clutch friction, durability and engine cleanliness. In the fast growing motorcycle markets of Asia wheremotorcycles are used mainly for daily transportation needs, there are enormous opportunities for motorcycle oils delivering
differentiated attributes that provide superior reliability to the end users. It was with this market perspective that this new
additive technology was developed.
The additive technology was developed based on a unique set of components and formulation approach to meet the lubrication
challenges of motorcycles, particularly its high shear and temperature conditions. In a forward-looking standpoint, thedevelopment was aligned to the current energy conservation and environmental trends in the personal mobility oil segment.
Hence, the technology was formulated in SAE 5W-30 with an opportunity for fuel economy credits from the lower viscometrics.
The additive was also developed in the lower phosphorous range of the JASO specification to be positioned as a lower SAPS
catalyst compatible additive. With the lower phosphorous and viscosity grade, durability trade off was a concern. However, theadditive technology demonstrated excellent durability performance, as shown from results in the modified FZG Pitting Test,
extended JASO T903 Friction Test, API SN demonstration program (with extended Sequence IVA) and a field test in Thailand. In
addition to durability, the additive technology also showed excellent engine cleanliness and sludge control performance. The
results of this extensive performance evaluation activity will be presented in detail in this paper….

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171006
11：00 - 12：00
Engine Controls I
Yutaka Nitta (SUZUKI MOTOR CORPORATION)
Roland Kirchberger (Graz University of Technology)

6. Paper No.(JSAE/SAE)
7. Paper title

20159788 / 2015-32-0788
Application of Adaptive Idle Speed Control on V2 Engine
Jie Yin, Yong Fu Syu, Bo Chiuan Chen, Yuh Yih Wu (National Taipei University of Technology),
Yao Chung Liang, Hsien-Chi Tsai (Hua-Chuang Automobile Information Technical Center)

8. Authors (Affiliation)

9. Abstract
This paper develops an adaptive idle speed control strategy for a V2, 1000 cc four-stroke, water-cooled, port injection SI engine.
In order to verify the proposed strategy, the non-dimensional engine model including charging and torque dynamics is establishedin Matlab/Simulink software based on previously experimental verification. The integration of dynamics above will be a multiinput-single-output (MISO) system, which inputs are throttle angle and spark advance angle, and the output is engine speed. The
proposed adaptive controller is developed on the model-based structure. The system parameters are updated by recursive leastsquare (RLS) method so the system is able to represent the actual operation. The updated system parameters adjust control gain
by derivation of closed-loop gain and pole placement. This research also applies RLS method in torque load identification, anduses feedforward control module to calculate the desired throttle opening for the corresponding engine torque. The feedforward
throttle control makes controller less angle of spark advance, therefore, the tracking time could be reduced. In order to verify the
proposed adaptive idle speed controller performance, the conventional proportional integral derivative (PID) idle speed controller
is established. The results show the proposed feedforward adaptive controller can obviously improve about 40% of tracking timewith ramps load. In addition, when the water pump load is added, the proposed strategy can also improve about 20%. Finally,
the results of the proposed strategy are also improved comparing to the conventional PID control as deposits happen.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159749 / 2015-32-0749
Online Engine Speed Based Adaptation of Combustion Phasing and Air-Fuel Ratio：
Evaluation of Feature Quality
Henning Heikes, Geetesh Gadkari, Christian Steinbrecher, Christian Linder, Martin Loehning,
Wolfgang Fischer (Robert Bosch GmbH)9. Abstract
In the Indian two-wheeler market, legislation and customers demand for a reduction of emissions and an increase of fuelefficiency. For two-wheelers with engine management systems, a cost-efficient approach for this trend exploits that theperiodical fluctuation of the engine speed of single cylinder engines contains useful information about its operating conditions.
The present article focuses on the quality of the estimation of combustion phasing and air-fuel ratio of a 125 cc single cylinder
motorcycle engine, obtained from the evaluation of these fluctuations.
The robustness of an oxygen sensor-less port fuel injection system can be increased by using the estimated air-fuel ratio toadapt the parameters of the fuel injection algorithm. The investigations have been carried out only on one bike so far, and haveindicated the following accuracies： with the implemented resource optimized algorithm the combustion phasing can be
estimated up to ±5°ca accurate with a good reproducibility even after long term operation on a chassis dynamometer. The
observed influence of engine temperature was insignificant. The air-fuel ratio feature showed an accuracy of about ±3% in a wide
operating range for lambda values smaller than 1.05.
Furthermore it is shown that reaching Indian emission legislation Bharat Stage 4 with a PFI system relying only on feed forward
control of the air-fuel ratio is possible.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171007
11：00 - 12：00
Two Stroke Engine I
Yuh Motoyama (Yamaha Motor Co., Ltd.)
Pierre Duret (IFP Energies Nouvelles)

6. Paper No.(JSAE/SAE)
7. Paper title

20159702 / 2015-32-0702
CFD Modelling of a Two Stroke Engine to Predict and Reduce Short Circuit Losses
Manish Garg, Davinder Kumar, Madani Syed (TVS Motor Company), Siva Nageswara (CDadapco)

8. Authors (Affiliation)

9. Abstract
One of the major reason for lower efficiency and higher unburned hydrocarbon and carbon monoxide emission for two stroke
engine is short circuit losses during the scavenging process. An attempt has been made in this study to understand and improve
this phenomenon. A three dimensional transient CFD model is developed for a loop scavenged, Schnullar type, 70 cc two stroke
engine. Three major processes, namely, blow down (expansion); scavenging and compression have been modelled. The model
is validated with PIV measurement done in motoring mode. Model is also validated with experimental data for trapping efficiency
with Watson method and for in-cylinder pressure during expansion, blow down and intake events. A good correlation is observed
between experimental and simulation results. CFD model is used to quantify various parameters, such as, delivery ratio, trapping
efficiency, scavenging efficiency, and amount of fresh mass short circuit at different load and speed points. Around 20 to 25%
short circuit losses are observed at all the load cases analyzed. The mechanism for this short circuit loss is understood with thehelp of a passive scalars based visualization method. Two major root causes identified are, port design and exhaust pressure
wave dynamics. Three different designs of ports are analyzed. With the best design, the short circuit loss is reduced by 12%.
Same design has been tested on a chassis dynamo-meter, that resulted into a reduction of 10% in HC (hydro-carbon) emission ina mass emission test on a drive cycle and 10% to 25% improvement in WOT (wide open throttle) wheel force in mid and higher
speed operating points.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159716 / 2015-32-0716
Quantification of Short-Circuiting and Trapping Efficiency in a Small Internal Combustion Engine
by GC-MS and GC-TCD
Joseph Karl Ausserer, Kevin P. Horn, Marc D. Polanka (Air Force Institute of Technology), Paul J.
Litke (Air Force Research Laboratory), Keith D. Grinstead Jr. (Innovative Scientific Solution
Incorporated)

9. Abstract
Loss mechanisms in 1-10 kW spark-ignition, two-stroke engines may be grouped into five categories： thermal losses, frictional
losses, sensible enthalpy in the exhaust gases, incomplete combustion, and short-circuiting of fresh fuel and air mixture. Theseloss mechanisms cause small two-stroke engines to have fuel conversion efficiencies 50%-70% lower than similar larger engines.
Previous studies of loss scaling in small engines have estimated the short-circuiting using heuristics derived for larger engines orgrouped it with other combustion losses to complete the energy balance. This work describes and compares two methods formeasuring short-circuiting on a commercially available, two-stroke, naturally aspirated, spark ignition engine with 55 cm3
displacement. One method used oxygen as an analyte (the Watson method), nitrogen as an internal standard, and gas
chromatography with a thermal conductivity detector for quantification. While the Watson method is historically proven, it only
works under globally rich combustion conditions. The other method, selected for its potential to work under lean combustion
conditions, used iso-octane as an analyte, argon as an internal standard, and gas chromatography for separation with mass
spectrometry for identification and quantification. The iso-octane method yielded results within 4% of the Watson method, adifference that is statistically indistinguishable at the 95% confidence level. Therefore, despite the larger uncertainty of the isooctane method (10%-15% versus 3%-5% for Watson’s method), the iso-octane method offers a valid method for determining
short-circuiting under lean combustion conditions.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171008
11：00 - 12：00
Fuel Supply Systems I
Hideyuki Okumura (JMIA/Yamaha Motor Co., Ltd.)
Tony Szczotka (Robert Bosch LLC)

6. Paper No.(JSAE/SAE)

20159755 / 2015-32-0755
CFD Simulation and Experimental Validation of a Throttle Body Design without Bypass for Fuel
Injected Motorcycles
Pradeep Ramachandra, Mohankumar Nagalapura (Bosch Limited)

7. Paper title

8. Authors (Affiliation)
9. Abstract
Increased penetration of gasoline EFI (Electronic Fuel Injection) in the Indian two wheeler commuter segment, demands
simplified, but robust solutions. Freedom for the end user to adjust the idle speed with carbureted engines is considered as
reference behavior. Control of idle air flow in the traditional throttle body designs is through a bypass path with either an idle
speed actuator or a mechanical screw. Due to the quality of air and vented blow-by in the air path, field issues observed on mostthrottle body designs include a) carbon deposition influencing the air flow characteristics b) consequent effects included
instability of idle speed, jamming of throttle valve or clogging of idle air control valve. One of the design measures suggested [1]was to introduce an idle screw on the throttle flap to retain the user experience based on the incumbent carburettor and address
the carbon deposition based on the knowledge of ETB (Electronic Throttle Body).
The primary objective of this investigation was to validate this assumption through CFD (Computational Fluid Dynamics) analysis
backed by vehicle trials. In CFD, carbon deposition can be characterized as a function of velocity and pressure. This phenomenon
was used to simulate air flow in the throttle body with and without bypass path and compared against the experimental results.
Further, these configurations were subjected to real world driving conditions to evaluate the effect on carbon deposition
phenomenon.
The simulation showed a channeled air flow with the maximum velocity of 353 m/s (which is greater than sonic velocity) for
throttle body without bypass path. The simulation and experimental results for air mass flow had close agreement with <8%deviation over the entire range of throttle opening. The results from vehicle trials indicated reduced rate of carbon deposition
when observed at frequent intervals during the trials. Learning from the iterative steps, vehicle validation results andcombination of smart software algorithm enabled a robust throttle body design.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159842 / 2015-32-0842
Downsizing of Fuel Injection Components for Small Motorcycles
Naoto Miyauchi, Takeshi Enomoto, Yukinori Kato, Satoshi Miura (Aisan Industry Co., Ltd.)In recent years, more and more small motorcycles, such as scooters, are introducing Fuel Injection System (FI system) worldwide.
As motorcycles have limited component spaces, it is not easy to put the fuel supply system products such as Fuel Pump Module(FPM) and Fuel Injector intended for four-wheel vehicles. Therefore, downsizing of these components are being required. In
addition, weight reduction is also an important design factor in terms of improvement in fuel efficiency and driving performance.
To meet these needs, we focused on motorcycles to optimize the design. We have been standardizing these components andstarting mass-production in order since 2002. This paper introduces FPM and Fuel Injector that were newly developed for
motorcycles.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171004
13：30 - 15：00
Diesel Engine I
Keiya Nishida (University of Hiroshima)
Giovanni Vichi (University of Florence)

6. Paper No.(JSAE/SAE)

201597010/ 2015-32-0710
Engine Performance, Emission and Combustion of Common Rail Turbocharged Diesel Engine
from Jatropha Curcas Using Artificial Neural Network
Arridina Susan Silitonga, H.H.Masjuki, Hwai Chyuan Ong, H.G. How (University of Malaya) F.
Kusumo (Universiti Kebangsaan Malaysia) Y.H. Teoh (Universiti Sains Malaysia) T.M.I. Mahlia(Universiti Tenaga Nasional)

7. Paper title
8. Authors (Affiliation)
9. Abstract

This paper investigates the performance, emission and combustion of a four cylinder common-rail turbocharged diesel engine
using jatropha curcas biodiesel blends (JCB). The test was performed with various ratios of jatropha curcas methyl ester (JCME)
in the blends (JCB10, JCB20, JCB30, and JCB50). An artificial neural networks (ANN) model based on standard back-propagation
algorithm was used to predict combustion, performance and emissions characteristics of the engine using MATLAB. To acquire
data for training and testing of the proposed ANN, the different engine speeds (1500-3500 rpm) was selected as the input
parameter, whereas combustion, performance and emissions were chosen as the output parameters for ANN modeling of acommon-rail turbocharged diesel engine. The performance, emissions and combustion of the ANN were validated by comparing
the prediction dataset with the experimental results.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159715/ 2015-32-0715
Detailed Diesel Combustion and Soot Formation Analysis with Improved Wall Model Using
Large Eddy Simulation
Beini Zhou, Masahiro Horikoshi, Akira Kikusato, Jin Kusaka, Yasuhiro Daisho (Waseda
University) Kiyotaka Sato, Hidefumi Fujimoto (Mazda Motor Corporation)

9. Abstract
A mixed time-scale subgrid large eddy simulation was used to simulate mixture formation, combustion and soot formation under
the influence of turbulence during diesel engine combustion. To account for the effects of engine wall heat transfer on
combustion, the KIVA code’s standard wall model was replaced to accommodate more realistic boundary conditions. This werecarried out by implementing the non-isothermal wall model of Angelberger et al. with modifications and incorporating the log
law from Pope’s method to account for the wall surface roughness. Soot and NOx emissions predicted with the new model arecompared to experimental data acquired under various EGR conditions.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159754 / 2015-32-0754
Low temperature premixed diesel combustion with blends of ordinary diesel fuel and normal
heptaneHideyuki Ogawa, Yuhei Sakane, Tatsunori Obe, Tatsuaki Arisawa, Gen Shibata (Hokkaido
University )9. Abstract
Premixed diesel combustion blending high volatility fuels into diesel fuel were investigated in a modern diesel engine. First,
various fractions of normal heptane and diesel fuel were examined to determine the influence of the blending of a highly ignitableand volatile fuel into diesel fuel. The indicated thermal efficiency improves almost linearly with increasing normal heptane
fraction, particularly at advanced injection timings when the fuel is not injected directly into the piston cavity. This improvement
is mainly due to decreases in the other losses, The decreases in the other losses with normal heptane blends are due to a
reduction in the unburned fuel which does not reach the gas analyzer.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171005
13：30 - 15：00
Vehicle Dynamics & Safety I
Shigeru Fujii (Yamaha Motor Co., Ltd.)Thomas Lagö (QirraSound Technologies Europe AB)

6. Paper No.(JSAE/SAE)

20159705 / 2015-32-0705
Simulation and Optimization Analysis of Small Vehicle Deceleration to Reduce Occupant Injury
at Frontal Collision
Takanobu Fujimura (SUZUKI MOTOR CORPORATION)

7. Paper title

8. Authors (Affiliation)
9. Abstract
Due to environmental problems, number of small vehicles with fuel efficiency increases. Since the small vehicles have small
deformation space, it is difficult for them to achieve good crashworthiness at a frontal impact accident. Small deformation space
usually yields high vehicle deceleration to absorb kinetic energy of the vehicle. The high vehicle deceleration may produce highoccupant deceleration and lead to high occupant injury value.
For example, North America, Japan and Europe specify head and chest injury value at vehicle's frontal collision. Those injury
values tend to be improved if vehicle deceleration decreases. Deceleration of small vehicle with a little deformation space must
be adjusted in order to prevent increase of the occupant injury value.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159813 / 2015-32-0813
Study on Airbag Concept for Motorcycles Using Opposing Vehicle as Reaction Structure
Yutaka Aikyo, Yuki Kobayashi, Takashi Sato, Tomohiko Akashi and Makoto Ishiwatari (Honda
R&D Co., Ltd.)

9. Abstract
An airbag system for motorcycle applications was developed and commercially released in 2006 based on many research resultson that system. In the airbag system, the bag should be supported during the period in a collision. The previously developed
system employed a configuration in which the airbag was supported by the structures of the motorcycle, such as the instrument
panel and the surrounding structures. These structures receive the reaction force to hold the airbag during a crash to properly
absorb the rider’s kinetic energy. Meanwhile, the previous system requires a larger area for these reaction structures and isapplicable only to the motorcycles that can provide the area. To overcome this limitation, we propose an airbag system employing
another concept. In this concept, the airbag does not use its vehicle structures as reaction structures but uses the structures ofan opposing vehicle, such as doors and/or pillars. For evaluations of the proposed system, full scale motorcycle-to-car crash tests
using 125 cm3 scooter-type models with and without the airbag were conducted in the seven impact configurations specified in
ISO13232. Through the crash tests, benefits of protective effects of the airbag system were confirmed in particular impact
configurations, and no significant risk for the rider due to the airbag was observed in the all tested impact configurations. It was
concluded that the proposed airbag system is feasible for reducing rider’s severity of injuries in a collision of a motorcycle nothaving sufficient reaction structures.

6. Paper No.(JSAE/SAE)
20159839 / 2015-32-0839
7. Paper title
Development of a Motorcycle Frame with Low Stiffness in the Side Direction for Racing
8. Authors (Affiliation)
Koichiro Kawata (SUZUKI MOTOR CORPORATION)
9. Abstract
In motorcycle race represented by MotoGP, the motorcycle bank angle in turning state reaches approximately 60 degrees. In sucha large bank angle, it is important that response of the motorcycle for the road surface displacement input is relaxed by designing
the frame with low stiffness in the side direction to secure the speed on cornering. On the other hand, strong frame stiffness of
longitudinal direction is required with a proper frame displacement to resist large force by the rapid deceleration. As seen above,
regarding stiffness of longitudinal and side direction of the frame of motorcycle, one should be high, and the other should be low.
However, in general, the ratio estimated by stiffness of side direction per that of longitudinal direction is approximately constantwith existing frame. This means that if the frame stiffness of side direction is lowered, that of the longitudinal would also be
lowered accordingly. Thus, it is difficult to design the frame of which stiffness of longitudinal direction is strengthened while thatof side direction is kept lowered. An object of this study is the development of the frame with different longitudinal and side
stiffness ratio unlike the current longitudinal and side stiffness ratio. The frame developed from this study is adopted in our
MotoGP machine and contributes to secure high speed on cornering.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171006
13：30 - 15：00
Engine Controls II
Yutaka Nitta (SUZUKI MOTOR CORPORATION)
Roland Kirchberger (Graz University of Technology)

6. Paper No.(JSAE/SAE)

20159752 / 2015-32-0752
Application of OSC Estimation Technology of the Catalyst to the Air-Fuel Ratio Control of theMotorcycle
Daisuke Yanase, Shinichi Kuratani, Takashi Abe, Hiroyuki Koga (Kawasaki Heavy Industries, Ltd.)7. Paper title

8. Authors (Affiliation)
9. Abstract
The regulation for emission gas of the motorcycle is rapidly being strengthened as the concern about global environment grows
around the world, and manufacturers are facing the problem to reduce the toxic materials in the emission gas more. As thetechnology to reduce the toxic materials, it is common to install a three way catalyst (TWC) on an exhaust system and optimize
the oxygen concentration at the inlet of TWC by maintaining air fuel ratio (A/F) on stoichiometric A/F with the control of fuelinjection quantity. Furthermore, TWC itself is designed to maintain proper oxygen concentration by the addition of a substancewith oxygen storage capacity (OSC), which is able to suppress the variation of the oxygen concentration. However, TWC losses
OSC during transient operation with the effect of a large disturbance of A/F and the conversion efficiency of TWC is not able torecover right after the disturbance even though maintaining the A/F near the stoichiometric A/F, which is regarded as a future
problem. Therefore the authors focused on maintaining OSC properly with A/F control in order to solve the above …
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159819 / 2015-32-0819
Impact of Alcohol–Gasoline Fuel Blends in Long-Tailed Boat Application
Kittichart Tumaiam, Kraiwut Kujirapan, Chinda Charoenphonphanich, Chaiwat Nuthong (KingMongkut’s Institute of Technology Ladkrabang), Teera Phatrapornnant (National Science andTechnology Development Agency), Masaki Yamakita (Tokyo Institute of Technology)

9. Abstract
Nowadays, human realize to the environment pollution cause from old engine and use the engine misapply. These engines willcause the problem such as air pollution and cannot use the engine to work at the maximum efficiency and fuel consumption. The
new of control technologies can solve problems from misuse engine by an electronic control unit work with many sensors.
Optimization of electronic control unit (ECU) makes an engine to work in maximum efficiency and decrease the environment
pollution. In this research, Port-fuel injection spark ignition engine (PFI Engine) fuelled with gasoline is use as the boat engine. To
use car engine as boat engine, the control system has to be modify and tune up for proper condition. For the method, theparameters that used to control and optimization are the boat’s running condition to tune up injection timing, injection duration,
ignition timing, and also the engine special function. And this paper aim to investigate and improve performance, efficiency andemission of misapply engine. After that we plan to do research on each part of the system that makes the engine run withalternative energy such as gasohol (E10 to E85) to reduce …
6. Paper No.(JSAE/SAE)
20159843 / 2015-32-0843
7. Paper title
Patented Software Solution to Prevent Rotation of the Tool upon Machine Start at Idle
8. Authors (Affiliation)
Marek Lajda, Sebastian Hook, Nikolai Reimgen (PRUFREX)
9. Abstract
During the start-up phase of machines it can happen that tools are inadvertently rotating, which is caused by the half-throttle
setting. Due to the starting throttle locking mechanism, the engine's rotational speed is above the engagement speed of the tool(for example the chain of a chain saw).
This article describes the software algorithms developed by PRUFREX that are able to prevent rotation of the tool upon machine
start at idle. The patented software solution is able to differentiate between start behavior with and without a starting throttle
locking mechanism based on the machine's speed and time information and, as a result, can identify or estimate the position of
the throttle valve. The effect of the algorithms is the switch-over between different ignition curves that are stored in the
microcontroller-operated ignition modules. This includes a provision in the start ignition curve that prevents the tool fromrotating. Toggling between different ignition curves is already part of today's technology. The underlying patent defines theconditions for switch-over that is solely controlled by software. The article explains the various machine states and theiridentification in detail. The possible program sequence is featured.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171007
13：30 - 15：00
Two Stroke Engine II
Yuh Motoyama (Yamaha Motor Co., Ltd.)
Pierre Duret (IFP Energies Nouvelles)

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159760 / 2015-32-0760
CFD Analysis of the Effect of the Injection Pressure on a Small 2S LPDI Engine
Francesco Balduzzi, Giovanni Vichi, Luca Romani, Giovanni Ferrara (University of Florence)

The paper investigates the influence of the fuel injection pressure on a small two-stroke engine with low pressure direct injection(LPDI). The authors in previous studies showed the benefits of the LPDI system in reducing the fuel short circuit, both from anexperimental and numerical point of view. As a direct consequence, both the specific fuel consumption and the pollutant
emissions were notably reduced, reaching the typical performance of a standard fourstroke engine of comparable size.
The main drawback of the system is the limited time at disposal for delivering the fuel with difficulties in achieving a satisfactory
air-fuel mixing and homogenization as well as fuel vaporization.
In order to overcome the aforementioned issues, a detailed numerical analysis is carried out by performing a wide set of CFD
simulations to properly investigate and understand the many complex phenomena occurring during the interaction between theinjected fuel and the fresh scavenging air. Starting from the reference configuration working...

6. Paper No.(JSAE/SAE)
7. Paper title

20159762 / 2015-32-0762
An experimental methodology for the evaluation of the trapped air-fuel ratio of a small 2S LPDI
engineLuca Romani, Francesco Balduzzi, Giovanni Vichi, Giovanni Ferrara (University of Florence)

8. Authors (Affiliation)
9. Abstract
A typical issue of the two-stroke engine in monitoring the combustion process is to measure the actual burning mixture with aconventional 02-sensor placed in the exhaust duct. In fact, the short circuit of fresh charge affects the correct acquisition of theresidual oxygen associated to the completeness of the combustion process, leading to the overestimation of the trapped air-fuelratio.
In a conventional homogenously scavenged two-stroke engine, a possible solution to the aforementioned issue is the direct
measurement of the mass flow rate of both the intake fresh air and the fuel delivered by the fuel supply system. This methodology
cannot be applied to 2S direct injection engine because air and fuel are not premixed.
The paper shows the application of a methodology for the evaluation of the trapped air-fuel ratio of the mixture inside the
combustion chamber in a small two-stroke low pressure direct injection (LPDI) engine. More in detail, the air short circuit isestimated by coupling the measurement of intake airflow and O2 raw emissions, while the fuel...
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159832 / 2015-32-0832
Layout and development of a 300 cm³ high performance 2S-LPDI engine
Franz Winkler, Roland Oswald, Oliver Schögl, Andrea Abis, Stefan Krimplstätter, Roland
Kirchberger (Graz University of Technology)

9. Abstract
In consideration of the fact that in extreme Enduro competitions two-stroke motorcycles are still dominating, the Institute ofInternal Combustion Engines and Thermodynamics, Graz University of Technology, with a long tradition in two-stroke technology,
has developed a new 300 cm³ two-stroke motorcycle engine.
The 2-stroke LPDI (Low Pressure Direct Injection) technology was originally developed for the 50 cm³ Scooter and moped market
in Europe. In 50 cm³ applications the LPDI technology fulfils the EURO 4 emission standard (2017) [1]. In a next step the LPDI
technology was applied to a 250 cm³ Enduro engine demonstrator vehicle. Based on the results of the demonstrator, a complete
new high performance 300 cm³ engine was developed. The development of this new engine will be described in this publication.
Some interesting aspects of the layout with 3D-CFD methods and also 1D-CFD simulation to optimize the exhaust system by DoE
methods are discussed in the paper.
For the first prototype (prototype 1) some carry over parts had to be used – crankshaft, connecting rod, clutch,...

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171008
13：30 - 14：30
Fuel Supply Systems II
Hideyuki Okumura (JMIA/Yamaha Motor Co., Ltd.)
Tony Szczotka (Robert Bosch LLC)

6. Paper No.(JSAE/SAE)
7. Paper title

20159767 / 2015-32-0767
Analysis of Mixture Formation Process in a PFI Motorcycle Engine

8. Authors (Affiliation)

Yasuo Moriyoshi, Tatsuya Kuboyama (Chiba University)
Hisashi Goto, Minoru Iida (Yamaha Motor Co., Ltd.)

9. Abstract
PFI (Port Fuel Injection) gasoline engines for motorcycles have some problems such as slow transient response because of wall
wet of fuel caused by the injector's layout. Hence, it is important to understand the characteristics of fuel sprays such as droplet
size and distribution of fuel concentration. Considering the spray formation in a port, there are three kinds of the essential
elements： breakup, evaporation and wall impingement. However, it is difficult to observe three of them at the same time.
Therefore, the authors have made research step by step.
In the authors' previous study, the authors focused on the wall collision, droplet sizes, droplet speeds and the space distributionof the droplets. In this study, the authors focused on evaporation. A direct sampling method using FID (Flame Ionization Detector)
for evaporating fuel was established and the concentration distribution of evaporating fuel in the port was measured andanalyzed. As a result, it was found that higher velocity in the port increases fuel concentration with enhanced atomization andthat evaporating fuel is easier to be affected by the flow and fuel distillation characteristics.

6. Paper No.(JSAE/SAE)
20159773 / 2015-32-0773
7. Paper title
A Novel Concept for Mixture Preparation in Port Fuel Injected Engines
8. Authors (Affiliation)
Saransh Jain, Anand T.N.C. (Indian Institute of Technology Madras)
9. Abstract
Every year, large numbers of two wheelers are sold in India and other Asian countries. A majority of these engines still tend to be
carbureted due to cost and fuel quality issues. As an alternative to the carburetor, port fuel injectors (PFI) have started being
introduced in the last few years for small two wheeler vehicles. Although PFI systems offer better metering of fuel and bettertransient response compared to carbureted systems, they are more expensive and require more power to pressurize the fuel.
More importantly, wall film formation is observed in both the technologies, which reduces the effectiveness of the PFI system.
Hence, a new technology is proposed which includes a PFI system along with an ultrasonic atomizer. The purpose of the proposedsystem is to improve the transient response and hence improve the fuel economy of gasoline engines and lower the emissions
especially under cold conditions.
The proposed concept was tested standalone on a laboratory setup. A transparent duct of square section was fabricated and fuelwas injected in it. High speed schlieren imaging was done to qualitatively visualize the vapor concentration in the proposed systemcompared to a conventional port fuel injection system. Mass measurement of the fuel atomized was done to quantitatively
characterize the proposed system. The proposed system was found to be better than the existing conventional PFI system. It hasmetering capability like PFI with potentially better transient response at a similar cost.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171004
16：00 - 18：00
Diesel Engine II
Yoshimitsu Kobashi (Kanazawa Institute of Technology)
Giovanni Vichi (University of Florence)

6. Paper No.(JSAE/SAE)

20159724 / 2015-32-0724
Droplets Behavior and Evaporation of Diesel Spray Affected by Ambient Density after Pilot
Injection
Mohd Al-Hafiz Mohd Nawi, Naoya Uwa, Yuki Ueda, Yuzuru Nada, Yoshiyuki Kidoguchi(Tokushima University)

7. Paper title
8. Authors (Affiliation)

9. Abstract
A fundamental study on spray behavior for small quantity injection under high boosting and high temperature conditions was
carried out by applying dual nano-spark shadowgraph photography method to constant volume spray chamber filled with inert
gas. The study showed macro-scale and micro-scale spray structures and dynamic changes of diesel spray affected by ambientdensity and temperature right after the pilot injection. Detailed observation and analysis of the images showed that high density
surrounding….
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159761 / 2015-32-0761
Detection of Cylinder-to-Cylinder Injection Variation in a Four-Stroke Diesel Engine by
Monitoring the Turbocharger Speed
Giovanni Vichi, Isacco Stiaccini, Michele Becciani, Giovanni Ferrara (University of Florence)
Lorenzo Ferrari (Italian National Research Council - CNR – ICCOM) Alessandro Bellissima(Yanmar R&D Europe) Ryouta Minamino (Yanmar Co. Ltd.)

9. Abstract
A condition monitoring activity consists in the analysis of several information from the engine and the subsequent dataelaboration to assess its operating condition. By means of a continuous supervision of the operating conditions, the performanceof an internal combustion engine can be maintained at design-level in the long term.The growing use of turbocharger (TC) in ICE
for automotive and industrial applications suggests to use the TC speed as a possible feedback of engine operating condition.
Indeed, the turbocharger behavior is connected to the thermo-dynamic and fluid-dynamic conditions at the engine cylinder
exit…..
6. Paper No.(JSAE/SAE)
7. Paper title

20159816/ 2015-32-0816
Study on the Effects of EGR Supply Configuration on Cylinder-to-Cylinder Dispersion and Engine
Performance Using 1D-3D Co-simulation
Pavlos Dimitriou, Richard Burke, Colin Copeland, Sam Akehurst (University of Bath )8. Authors (Affiliation)
9. Abstract
Exhaust Gas Recirculation (EGR) is widely used in IC combustion engines for diluting air intake charge and controlling NOx
emission. The rate of EGR required by an engine varies by the speed and load and control of the right amount entering thecylinders is crucial to ensure good engine performance and low NOx emission. However, controlling the amount of EGR entering
the intake manifold does not ensure that EGR rate will be evenly distributed among the engine’s cylinders. This can many times
lead to cylinders….

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159825/ 2015-32-0825
Combustion Characteristics of Diesel Spray with Temporally-Splitting High-Pressure Injection
Yusuke Nishioka, Heizo Tomoda, Keiya Nishida, Youichi Ogata (University of Hiroshima) Baolu
Shi (Beijing Institute of Technology) Gnanasekaran Kishorkumar (University of Hiroshima)

9. Abstract
Effects of temporally-splitting and high-pressure injection on the Diesel spray and combustion processes were investigated byusing the high-speed video camera and the two-color pyrometry. The images were analyzed to obtain the tip penetration/spray
angle/air entrainment of the spray and the soot concentration/temperature distributions in the flame. It was found that the
optimal combination of the temporally-splitting and the high-pressure injection could simultaneously reduce the sootconcentration and the temperature of the spray flame.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171005
16：00 - 18：00
Vehicle Dynamics & Safety II
Masayuki Baba (Honda R&D Co., Ltd.)Thomas Lagö (QirraSound Technologies Europe AB)

6. Paper No.(JSAE/SAE)
7. Paper title

20159723 / 2015-32-0723
Chassis Development for the Motorcycle With High Power Output Supercharged Engine
Hiroshi Ishii, Daisuke Saeki, Tomo Yamamoto, Manabu Morikawa, Eiji Sakurada, Kazuhiro
Ichikawa, Seiichi Sonoda, Taku Nagata, Toshiyuki Kimura (Kawasaki Heavy Industries, Ltd.)

8. Authors (Affiliation)
9. Abstract

In motorcycles, the size and output performance of the engine itself has a major effect on the maneuverability of the motorcycle.
In particular for cases where a high output engine is mounted on a lightweight frame, these effects are even more of a concern.
In the case of developing a racing motorcycle with a high power engine, the behavior of the motorcycle differs depending on
the output range used and there are a lot of cases where changes to the basic dimensions of the motorcycle as well as the main
components are required. Here, there are a lot of cases where the rider and drive-able courses are limited to compatibility with
distinct specifications and when considering use as …
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159810 / 2015-32-0810
Development of High Performance Motorcycle Wheel using Numerical Shape Optimization
Hisato Tokunaga, Kazuhiro Ichikawa, Takumi Kawasaki, Masato Kogirima, Eiji Sakurada, Tomo
Yamamoto (Kawasaki Heavy Industries, Ltd.)

9. Abstract
High performance motorcycles require dynamic performance that encompasses superior handling, wherein the wheels are oneof the key components that determine the dynamic performance of the motorcycle. In this paper, we will clarify the dynamic
parameters for the wheels that have an impact on the handling while also constructing a design technique in which numericalshape optimization is applied.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159834 / 2015-32-0834
Motorcycle Stability Control – The next generation of motorcycle safety and riding dynamics
Thomas Lich (Robert Bosch GmbH), Wilko Gordon Block, Prashanth S N (Robert Bosch
Corporation Japan), Brad Heiler (Robert Bosch LLC)

9. Abstract
Anti-lock Braking Systems (ABS) for motorcycles have already contributed significantly to the safety of powered two wheelers on
public roads by improving bike stability and controllability in emergency braking situations. In order to address further riding
situations, another step forward has been achieved with Motorcycle Stability Control (MSC) system. By combining ABS,
electronically combined braking system (eCBS), traction control and inertial sensors even in situations like braking andaccelerating in corners the rider’s safety can be improved.…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159709 / 2015-32-0709
Novel Low Cost Experimental Procedures to Estimate the Longitudinal Force Characteristics ofa TireBarath Mohan, Venkata Mangaraju Karanam (TVS Motor Company) Chandramouli
Padmanabhan (IIT Madras)

9. Abstract
The aim of the present study is to develop feasible test methods to measure tire parameters that can be used in two wheeler
industry for tire development. In this work, test methods are developed to measure the longitudinal friction coefficient andstiffness characteristics of motorcycle tires. Using the measured longitudinal forces from the testing procedure, a fairly accurate
tire model has been developed. Based on this tire model the braking performance of the motorcycle is estimated using ananalytical model of the vehicle. These are validated with experimental data. It is found that there is a good match between the
results. The test is conducted for various bias ply tires used in motorcycles and the results are presented. The test methods
proposed are shown….

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171006
16：00 - 18：00
Alternative Fuels I
Koji Yoshida (Nihon University)
Brent Dohner (The Lubrizol Corporation)

6. Paper No.(JSAE/SAE)
7. Paper title

20159712 / 2015-32-0712
SI Engine with Direct Injection of Methanol Reforming Products –First Experimental Results
L. Tartakovsky, R. Amiel, V. Baibikov, R. Fleischman, M. Gutman, A. Poran, M. Veinblat (Technion– Israel Institute of Technology)

8. Authors (Affiliation)
9. Abstract

In this paper we describe conversion of the gen-set gasolinefed carburetor single-cylinder SI engine to the directinjection version
operating with the gaseous hydrogen-rich methanol reforming products, and present the first experimental results. It was foundthat engine feeding by methanol steam reforming products has a great potential of pollutant emissions mitigation as comparedwith gasoline. NOx concentrations in the exhaust gas were reduced by a factor of 7 as a result of the lean combustion and lowering
incylinder temperatures. Particle mass emissions were mitigated to zero-impact levels. Harmful emissions of the target pollutants
THC, CO and the GHG gas CO2 were reduced by a factor of 6, 25 and 1.5, respectively…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159784 / 2015-32-0784
An Experimental Investigation of Butanol-Gasoline Blend Fuel with Different Fuel Injection
Pressure
Yung-Hsiang Hsu, Huang-Min Lin, Chia-Hong Chung, Yuh-Yih Wu (Nation Taipei University ofTechnology)

9. Abstract
Butanol is deemed as the potential alternative fuel for future development, and the previous researches show poor injection
spray atomization when high butanol concentration blended fuel applying on stock small scooter engines. In this research, aplatform is built to observe the spray atomization phenomena with 2.5 kg/cm2 (2.452 bar)、3.5 kg/cm2 (3.433bar) injection
pressures and various n-butanol volume percent concentration blended fuels, B60, B80 and B100. After that, engine experiments
are undergone with above conditions under wide open throttle (WOT) with stoichiometric air fuel ratio (AFR) at 4000 rpm. The
experiment results are analyzed and discussed from different aspects eventually.…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159795 / 2015-32-0795
Effect of Ignition timing on Small SI Engine Torque at WOT condition with syngas from woodbiomass gasifier
Hiroshi Enomoto, Kazuyuki Teraoka, Noboru Hieda, Masahiro Sasao and Yusuke Odani (Collegeof Science & Technology, Kanazawa University)

9. Abstract
Recently, alternative power generation that does not use the oil has attracted attention. There is a power generation using abiomass in one of them. However, biomass power plants is fewer in Japan. Below are two reasons why biomass power plants isfew. Firstly, biomass resources are widely and thinly. So, biomass resources is a high transportation cost. Secondly, Efficiency ofsmall biomass plant is low. Therefore, we're working with high-efficiency small biomass gasifier to the development of the power
generation method.…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159831 / 2015-32-0831
A study of Stoichiometric Bio-mass Gas Engine
Toru Nakazono, Yuta Watanabe (Yanmar company.,co.ltd)

Bio-mass fuel gas is very important because bio-mass gas is renewable and carbon free. Especially, woody chips are very popularand are not used efficiently. Gasifier makes the producer gas from woody chips. Conventionally, dual fuel engines are used togenerate electricity by producer gas and light oil. As the dual fuel engine can run under the low heating value gas, dual fuel engine
is very useful. As light oil is fossil oil, it is not carbon free. If bio-mass gas engine can run only by producer gas, this power unit iscarbon free. As the heat value of producer gas is very low and fluctuates always, bio-mass gas engine should be controlled A/F
precisely.…

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171007
16：00 - 18：00
Collegiate Events
Takashi Mitome (SUZUKI MOTOR CORPORATION)
Robert Kee (Queen’s University Belfast)

6. Paper No.(JSAE/SAE)

20159742 / 2015-32-0742
Optimizing the Opening Period and the Timing of Intake and Exhaust Valves to Improve Engine
Performance in a Supermilage Vehicle
Kenta Goto, Shinji Noda, Kohei Nakashima, Yoshio Murakami (Meijo University)

7. Paper title

8. Authors (Affiliation)
9. Abstract
To improve engine torque and specific fuel consumption in a supermilage vehicle, we experimentally adjusted the valve lift andopening period in rocker arms, testing various follower configurations and adjust screws. Using the follower configuration in acommercially-available rocker arm, we compared 4 different levels of valve lift and opening period in the intake, and 4 different
levels in the exhaust, making 16 combinations. Then, utilizing 5 kinds of modified follower configurations of the rocker arms in
the intake, and 3 in the exhaust, we also compared 24 combinations (including the commercially-available follower
configurations). We tested our experimental supermilage engine under full-load at 2000 to 4500 rpm, simulating powering a
supermilage vehicle…
6. Paper No.(JSAE/SAE)
20159823 / 2015-32-0823
7. Paper title
Adaptation of turbocharger to small displacement single cylinder SI engine
8. Authors (Affiliation)
Duan Chaoran, Yujiro Fujita, Mitsuhisa Ichiyanagi, Takashi Suzuki (Sophia University)
9. Abstract
This paper represents the adaptation of turbo charger to single cylinder 450 cc SI engine which is used for the student formulacompetition. The experiment and 1D engine simula-tion called as GT-Power were performed to confirm the ef-fect of valve
profile, compression ratio and air fuel ratio on the engine performance under the naturally aspirated condi-tion. The maximum
valve lift of the intake valves increased 27% and that of the exhaust valves increased 15% as com-pared with the low profile cam.
The compression ratio was increased from 12.3 to 13.5 by changing the piston top land length in order to improve the thermal
efficiency. It was confirmed that the torque peak was moved from 6000 rpm to 8000 rpm by changing the valve profile…
6. Paper No.(JSAE/SAE)
20159838 / 2015-32-0838
7. Paper title
Tuning for FSAE Engine with a Supercharger
8. Authors (Affiliation)
Fukuoka Tadamasa, Shinji Kajiwara (Kinki University)
9. Abstract
Kinki University formula project has been participating in the student Formula SAE of Japan (JSAE) every year for theCompetition since the second time.
The engine uses ZX-6R made by Kawasaki Heavy Industries for the Competition from the eighth time.
"Improvement of limited performance" is inserted in the concept through the development of a power train.
Supercharger loading, engine dry sump and engine cooling management were improved.
(80.0 PS) / 9000 rpm of maximum output 59.6 kW and (7.2 kgfm) / 8000 rpm of maximum torque 70.6 Nm were achieved by thesupercharger loading. We succeeded in getting 90% of torque band (4000-9000 rpm) by 50% of the number of rotations inregular use (2000-12000 rpm)…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159829 / 2015-32-0829
A Study on the Design and Manufacturing for Student Formula Japan Vehicle
Toshiki Yamashita, Naohiro Nojima (Graduate School of Kokushikan University), Tomoaki
Kodama , Yuji Mizutani (Kokushikan University), Yasuhiro Honda (Kokushikan University, Schoolof Science and Engineeringh)

9. Abstract
Higher running performance of a manufactured vehicle is one of the most important themes that should be studied in Student
Formula Japan Competition (SFJ Competition). In the purpose of this study, the chassis must be required light weighting and highstiffness. The former can reduce the centrifugal force and the inertial force in the turning and the latter can contribute to
demonstrate the suspension performance according to design. The SFJ competition has Skid Pad event to compete for steerage
responsiveness and high suspension performance on turning. The balance of the highly performed engine and chassis requires
to keep high running performance of competition vehicle…

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Tuesday, November 171008
16：00 - 18：00
Engine Technology I
Satoshi Inoue (Honda R&D Co., Ltd.)
Patrik Pertl (Graz University of Technology)

6. Paper No.(JSAE/SAE)

20159701 / 2015-32-0701
Compressed Air as a Quality and Pollution Free Fuel Substitute in Reciprocating Engines - an
Effect of the Valve Size on the Engine Performance
Takayuki Sugita (Hiroshima Prefectural Miyajima Technical High School)

7. Paper title
8. Authors (Affiliation)

9. Abstract
An existing 4 stroke-cycle gasoline engine has been partially modified without dynamically changing its mechanism for the
purpose to utilize the compressed air as an alternative energy source. The principle is to mechanically control the compressed air
flow through the intake and exhaust valve every revolution of a crankshaft by modifying the camshaft cam’s lobes, which changes
the engine operation from 4 strokes to 2 strokes cycle mode. In the previous investigation the principle was verified with a current
50 cc….
6. Paper No.(JSAE/SAE)
7. Paper title

8. Authors (Affiliation)

20159713 / 2015-32-0713
Miller/Atkinson Valve Timing as Full Load Concept for a Naturally Aspirated Cogeneration
EngineDenis Neher, Fino Scholl, Matthias Deinert, Maurice Kettner (Karlsruhe University of Applied
Sciences), Danny Schwarz, Markus Klaissle (SenerTec Kraft-Wärme-Energiesysteme GmbH),
Blanca Giménez Olavarría (University of Valladolid)

9. Abstract
Lean burn operation allows small cogeneration engines to achieve high efficiency and low NOx emissions. While further mixture
dilution enables future emission standards to be met, it leads to retarded combustion phasing and losses in indicated engine
efficiency. IMEP drops due to lower fuel fraction, in particular, for naturally aspirated engines, reducing mechanical efficiency
significantly. In this work, an alternative engine configuration was investigated that improves the trade-off between engine
efficiency….
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159809 / 2015-32-0809
Expansion to Higher Efficiency – Experimental Investigations of the
Atkinson Cycle in Small Combustion Engines
Patrick Pertl, Alexander Trattner, Reinhard Stelzl, Michael Lang, Stephan Schmidt, Roland
Kirchberger (Graz University of Technology)

9. Abstract
The enhancement of efficiency will play a more and more important role in the development of future (small) internal combustion
engines. In recent years, the Atkinson cycle, realized over the crank drive, has attracted increasing attention. Several OEMs havebeen doing investigations on this efficiency-increasing principle with in the whole range from small engines up to automotive
ones. In previous publications, the authors stated that an indicated efficiency of up to 48% could be reached with an Atkinson
cycle-based engine…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159808 / 2015-32-0808
Development of two types of industrial SI engines, to meet diverseness of regional demands
and emissions requirements
Takeshi Kawasaki, Yuichiro Yamada, Toshihiro Tsujioka, Kentaro Shiraishi, Shinji Kishi (Kubota
Corporation)

9. Abstract
Due to the changes in the environment surrounding the industrial engine market, such as strengthening of exhaust emissions
regulations of diesel engines and production increase of shale gas, the needs of the gasoline, LPG or natural gas fueled engines
are growing. In the North American market, exhaust emissions regulations of industrial SI engines are getting strict. On the other
hand, European market and developing countrys’ market have no exhaust emissions regulations for SI engines. Therefore it isnecessary to develop the engines which meet the needs of each region. Based on the existing diesel engine, we developed thetwo types of SI engine WG2503….

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181004
8：30 - 10：00
NVH Technology
Hiroshi Yano (Kawasaki Heavy Industries, Ltd.)Thomas Lagö (QirraSound Technologies Europe AB)

6. Paper No.(JSAE/SAE)
7. Paper title

20159747 / 2015-32-0747
Placement Technique of Measurement Points for Inverse Acoustic Analysis
Hiroko Oshima, Hilmi Bin Hela Ladin, Akihito Ito, Nobutaka Tsujiuchi, Takayuki Koizumi(Doshisha University)

8. Authors (Affiliation)
9. Abstract

This paper describes a measurement points’ placement technique for the sound source identification using inverse acoustic
analysis. In order to reduce noise in NVH problem for various kinds of machines including small size engine, it is necessary to
identify the sound source. The inverse acoustic analysis is a technique that is effective for the sound source identification. The
inverse acoustic analysis identifies a surface vibration of an object by measuring the radiated sound and solving the inverse
problem. Nakano et al. researched about the location of sound pressure measurement points for accurate improvement. Theyclarified that the sound pressure measurement points on the concentric circle gave more accurate surface vibration than themeasurement points on the square lattice. In this paper, we proposed a measurement points’ placement technique based on thespace filling design. The placement of the measurement points with the space filling design has the following merits; (1) Enables
to decide a number of measurement points according to the experiment. This characteristic is superior to location on the squarelattice. (2) Enables to predict the surface vibration of a rectangular object….
6. Paper No.(JSAE/SAE)
7. Paper title

20159774 / 2015-32-0774
Comparison Method of Input Powers and Contribution Rates Between Statistical Energy
Analysis and Transfer Path Analysis for Small Power Generator’s Enclosure
Hilmi Bin Hela Ladin, Nobutaka Tsujiuchi, Katsuhiko Kuroda, Akihito Ito (Doshisha University)

8. Authors (Affiliation)
9. Abstract
This paper describes the comparison method of input powers and contribution rates from vibration sources to a small power
generator’s enclosure represented by a thinwalled plane structure determined by Statistical Energy Analysis (SEA) and Transfer
Path Analysis (TPA). In the pursuit of efficient ways to analyze the design dynamics of small machines such as a small power
generator, it is important to identify information and dynamics of input power sources during machine operation. SEA and TPA
are two of the most efficient methods in identifying the dynamics of a structure during machine operation. SEA is used for systems
with many resonant modes, and predicted results are based on space averages. On the other hand, TPA is based on estimationof a frequency response function between an excitation point and a response point. In this study, we proposed a method tocompare SEA evaluated by power injection method and TPA evaluated by matrix inversion method. The method is validated
through numerical analyses, using a finite element method (FEM). We focused our research on the enclosure of a power
generator and simplified it by constructing a partial enclosure model of a simple structure….
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159727 / 2015-32-0727
Engine Mount System Achieving Reduced Vibration from an Inline 3 Cylinder Engine Installed ina Utility Vehicle
Akiyuki Yamasaki, Teruaki Yamamoto, Kazumasa Hisada, Hiroshi Nakahara, Takumi Kawasaki(Kawasaki Heavy Industries, Ltd.)

9. Abstract
This paper describes an engine mount system that achieves reduced vibration on an industrial type utility vehicle. First thevibration level and direction of the inline three cylinder engine installed in the vehicle was analyzed and based on these results a
mount layout that leads to a reduced level of vibration felt by the passengers was developed. Next, this was applied on an actual
vehicle and spring characteristics were designed for each mount. The actual spring constants were set such that when considering
the engine to be a rigid body, the resonance frequency thereof occurs at an engine speed lower than idle and in addition were
set to ensure component strength relative to driving forces and inertial forces that act while the utility vehicle is being driven.
Lastly, achievement of significant vibration reduction was confirmed on an actual vehicle showing that this engine mount systemis effective at reducing vibration.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181006
8：30 - 9：30
Alternative Fuels II
Tohru Nakazono (LEMA / YANMAR Co., Ltd.)
Robert Kee (Queen’s University Belfast)

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159733 / 2015-32-0733
Influence of Supercharging on Biodiesel Combustion in a Small Single Cylinder DI Diesel Engine
Yasufumi Yoshimoto (Niigata Institute of Technology )Biodiesel, a transesterified fuel made from vegetable oils, is a renewable, biodegradable, and nontoxic fuel. It offers potential
reductions in carbon dioxide emissions, and a number of studies have been conducted for diesel engines with biodiesels as diesel
fuel substitutes. From the viewpoint of environmental protection, it may be expected that biodiesels would give PM reductions
at high load operation as well as there would be HC and CO emission reductions because of the oxygenated fuel characteristics.
It is well known that supercharging is a very effective technique to improve the characteristics of diesel combustion. The present
study investigated the effect of boost pressure on the operation of a small single cylinder DI diesel engine equipped with aconventional jerk type injection system. The study employed a Roots blower type supercharger driven by a motor, and the boostpressures were varied from 100 kPa (nearly naturally aspirated condition) to 140 kPa. The experiments used three kinds of
biodiesels： rapeseed oil methyl ester (RME), soybean oil methyl ester (SME), and coconut oil methyl ester (CME). Further, ablended fuel with 60% (mass) coconut oil and 40% 1-butanol (represented as CMEB) was also used. Here, butanol is a kind of
biofuel that can be produced by various organic substances such as agricultural crop waste…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159801 / 2015-32-0801
An Application of Cellulosic Liquefaction Fuel for Diesel Engine
Masayuki Yamazawa (Graduate school of Nihon university )In this study, wood was mixed with 20 wt.% of polypropylene and These was liquefied by using the mineral oil as a solvent. Diesel
fraction CLF (Cellulose Liquefaction Fuel) and naphtha fraction CLF were distilled from this liquid. In case of diesel fraction CLF
mixed diesel fuel, the ignition was delayed and a high smoke concentration was detected. In naphtha fraction CLF mixed diesel
fuel, CO and THC concentrations were higher than those of diesel fuel. However, engine performance of these CLFs was almost
equal to diesel fuel. Therefore, CLFs mixed diesel fuel can be used as diesel alternative fuel.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 18
1007
08：30 - 9：30
Measurement & Simulation I
Tadao Okazaki (LEMA / Kubota Corporation)
Giovanni Ferrara (University of Florence)

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159717 / 2015-32-0717
Effect of thickness ratio on fatigue and FEA life estimation criteria in welded structures
Govardan Daggupati, Dora Karedla, Gagandeep Risam, N Kuppan (TVS Motor Company Limited)

The welded structures have a broad applicability in automotive industry. The welding being an assembled process, presents bothadvantages and disadvantages for the two wheeler motor structure. A simple existing defect after welding can generate acatastrophic fracture. Recently all major fabricated structures in two wheelers are optimized by Computer Aided Engineering Finite Element Analysis techniques to meet the constricted weight to strength and stiffness targets. Local reinforcements in themain structure with unequal member thickness are playing major role to meet these requirements. Various critical parameterswhich affect the weld structure life are not being modeled in FE analysis to minimize the modeling complexity and computation
times. But in FEA-simulations acceptance stress values for a given base material are derived as a function of various parameterslike the geometry, size, thickness, weld location, weld toe, flank angle, welding quality and cold working process etc. In this paper
the effect of the base material thickness and weld location on fatigue life of welded structure and FEA simulation acceptancelimit values are investigated for two wheeler scooter frame….

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159804 / 2015-32-0804
Investigation of In-Cylinder Heat Flux in a Single Cylinder, 4 Stroke, Air Cooled, Spark Ignition
Engine for Motorcycle Application
Rajagopalan V.R, Anand S, Nagendra Kumar D, Karunaharan V and Lakshminarasimhan V (TVS
Motor Company Ltd.)

9. Abstract
Heat flux measurements can provide much needed insight into the energy flow inside an IC engine, which is the key to optimizing
its performance. This paper focuses on understanding the nature of heat flux curve and how it varies with varying load conditions,engine speed, Air fuel ratio and ignition timing in a single cylinder, 4 stroke, carbureted, air cooled, spark ignition engine formotorcycle application. Incylinder heat flux was monitored along with wall temperature and cylinder pressure for motored
operation as well as fired conditions. The difference between the motoring mode and fired mode was analyzed to separate out
the effects of combustion. In general, the magnitude of maximum heat flux was found to increase with engine rpm and loadwhen all other engine parameters remained constant. The heat flux was found to increase when a mixture setting closer to thestoichiometric value was used. While studying the effect of ignition timing, it was observed that the peak cylinder pressure andcylinder head wall temperatures increased as the ignition timing was advanced. However, there exists a particular value of ignition
timing for which the heat flux peaked for any set of operating conditions and advancing the timing any further resulted in adecrease in the magnitude of peak heat flux regardless of the fact that the cylinder pressure continued to rise well beyond thispoint.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181008
8：30 - 10：00
Engine Technology II
Yuh-Yih Wu (National Taipei University of Technology.)
Patrik Partl (Graz University of Technology)

6. Paper No.(JSAE/SAE)
7. Paper title

20159729 / 2015-32-0729
Development of a Supercharged Engine for Motorcycle with a Centrifugal Supercharger
Hiroyuki Watanabe, Satoaki Ichi, Masahito Saito
Kazuki Arima, Yasushi Ishibashi （Kawasaki Heavy Industries, Ltd.）

8. Authors (Affiliation)

9. Abstract
In the development of motorcycle engines, a strong feeling of power, an element of being fun to ride has continued strong
demand. However, demand to meet environmental performance, a conflicting element, has increased dramatically in recent years
and a breakthrough technology that achieves both environmental performance and a feeling of power is in demand. Here, thenewly developed engine has greatly enhanced feeling of power while clearing stringent environmental restrictions through useof a centrifugal type supercharger.
However, there were several problems that had to be resolved with regards to application of a supercharger to a motorcycle
engine. In applying a supercharger to a motorcycle, a major problem is the best way to keep the engine size from increasing insize. The engine, which is the heaviest parts on a motorcycle greatly affects motorcycle maneuverability so it must be compact
and the mass concentrated. Another one of the problems was suppression of knocking to the extent possible. An intercooler forcooling intake air is generally used as a countermeasure for knocking in supercharged engines. However, increase in size andweight of the motorcycle through use of an intercooler was cause for a significant loss in the fun to ride aspect and thus wasdifficult to permit. For this model, by increasing the supercharging efficiency of the supercharger and matching it to the engine
characteristics suppression of intake air temperature and thus knocking was achievedchnologies used to resolve problems thatarise when applying a centrifugal supercharger to a motorcycle engine.
6. Paper No.(JSAE/SAE)
20159768 / 2015-32-0768
7. Paper title
Free Piston Combustion Engine Design Analysis and Challenges
8. Authors (Affiliation)
Frank M. Washko, Rodeo A. Winchell (Saint Martin’s University)
9. Abstract
There has been a recent resurgence in interest in “free piston” engine designs, particularly for small engine applications. This has
been driven primarily by the demand for higher efficiency, flex-fuel capability, and also electrical demand in hybrid-electric
applications. In free piston engines, expansion gasses are used to send energy directly to electrical or hydraulic power systems,
rather than through a crankshaft. In many instances, the designs use opposed pistons to contribute the momentum of one piston
to the upwards stroke of the opposing piston. This paper will review the details and benefits of the early free piston designs andsome current designs, including our own hydraulic hybrid engine designs. The paper will then turn to a future free piston engine
application that is in development.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159757 / 2015-32-0757
Fuelling a two-wheeler engine by ultrasonic atomization
Balasubramanian N., Keerthi Ganesh and Anand T.N.C.
of Technology Madras, India)(Indian Institute

9. Abstract
This paper presents work performed to improve an engine’s fuel economy by introducing ultrasonic atomization as the methodof fuelling. An ultrasonic atomizer was added to the air intake path of a four stroke spark-ignited two-wheeler engine, replacing
the conventional carburetor. Test results indicate that the engine BSFC reduced by around 20% due to lower pumping losses andlean operation facilitated by better fuel atomization. Less throttling also reduced the pressure difference between the air filterand combustion chamber, especially at lower speeds and low loads. This reduced exhaust gas dilution into the intake manifold
and hence a rich mixture was not required for stable operation even at idling conditions. HC emissions are seen to be high andwill need to be addressed, but NO emissions reduced significantly.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181004
10：30 - 11：30
Advanced Combustion I
Hiroya Ueda (Honda R&D Co., Ltd.)Francesco Balduzzi (University of Florence)

6. Paper No.(JSAE/SAE)
7. Paper title

20159738 / 2015-32-0738
Study on Flame Behavior Control by the Electric Field
Shota Yanagisawa, Akira Iijima, Hideo Shoji, Koji Yoshida (Nihon University) Jun Osaka,
Yoshihiko Matsui, Wakichi Kondo (DENSO CORPORATION)

8. Authors (Affiliation)

9. Abstract
The purpose of this study is to elucidate flame propagation behavior of homogeneous propane-air mixture under applicationof non-uniform electric field. A needle-shaped electrode was attached to the ceiling and a plate electrode was set at bottom of
combustion chamber, so that the electric field was applied in the direction of the chamber's vertical axis. A homogeneous
propane-air mixture was supplied at equivalence ratio of 1.0 and was ignited by leaser induced breakdown under atmosphericpressure and room temperature. It was found that the flame front and plate electrode were repelled each other and a thin air
layer was formed between the flame and plate electrode when a relatively low positive DC non-uniform electric field was applied
to the needle-shaped electrode. It might be thought that the induced current was generated in the flame front, so that the flame
front and plate electrode repelled each other. However, when a high DC voltage which generated corona wind was applied, theflame front was deformed and the thin air layer was not formed. In case of a negative DC non-uniform electric field, the electricalbreakdown was occurred through the flame. When the flame front approached the plate electrode and a positive single pulse
high voltage was applied to the needle-shaped electrode (input voltage was 8 kV and pulse width was 2 ms), a thin air layer was
effectively formed and the maximum combustion pressure was higher than that of conventional combustion due to reduction ofheat loss by the thin air layer.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159721 / 2015-32-0721
Effects of Intake Pressure and Air-Fuel Ratio on Controlled Hot Surface Ignition Operating with
Natural Gas
Fino Scholl, Denis Neher, Maurice Kettner (Karlsruhe University of Applied Sciences), Andrés
Melgar (BachillerUniversity of Valladolid), Markus Klaissle (SenerTec Kraft-WärmeEnergiesysteme GmbH)9. Abstract
In an effort to reduce both maintenance costs and NOx emissions of small cogeneration engines operated with natural gas, analternative ignition system that allows stable operation at very lean homogeneous air-fuel mixtures has been developed.
Combustion is induced by an electrically heated ceramic glow plug, whose temperature is controlled by an ECU. Adjusting hot
surface temperature allows shifting the inflammation timing of the mixture and, therefore, the phasing of combustion in theengine cycle.
The main aim of this work was to determine the effect of intake pressure and air-fuel ratio on the parameters of hot surface
ignition (HSI) and understand which are the factors limiting stable HSI operation in terms of cycle-by-cycle variations.
Furthermore, in order to explain abnormal combustion phenomena occurring at high surface temperatures, the process of
mixture inflammation and combustion was examined through a combination of numerical simulation using the ECFM-3z
combustion model and engine trials employing optical probes to record combustion radiation. The experiments showed that theenergy consumption required to heat the surface and initiate combustion can be decreased substantially when raising intakepressure and/or advancing combustion phasing. On the other hand, when leaning the mixture or retarding combustion, theenergy demand increases. It was found that the temperature control of the hot surface is most stable when heat released fromcombustion is relatively low and produces low combustion temperatures.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181005
10：30 – 11：30
Materials I
Hirotaka Kurita (Yamaha Motor Co., Ltd.)
Brent Dohner (The Lubrizol Corporation)

6. Paper No.(JSAE/SAE)
7. Paper title

20159743 / 2015-32-0743
Development of Black Surface Treatment Applicable to Bolts for Motorcycles
Hiroyuki Yoshida, Hiroshi Hirayama, Shinsuke Mochizuki (Honda R&D Co., Ltd.)

8. Authors (Affiliation)

Manabu Inoue, Yasuhiro Kato, Toshiki Inomata (Dipsol Chemicals Co., Ltd.)

9. Abstract
A black surface treatment without using hexavalent chromium and applicable to bolts of motorcycles has been developed. The
surface treatment also satisfies the requirements of bolts for motorcycles such as fastening performance, corrosion resistance,
weather resistance and appearance of outer finish.
There is a method of coating a black chemical conversion film using trivalent chromium on the zinc-plated surface as one of thesurface treatments that do not use the hexavalent chromium. Such a black film, however, is thinner than the film using hexavalentchromium, and unable to ensure satisfactory black appearance. Meanwhile, although the dip-coating using a black paint can
provide a sufficient black color, it is necessary to apply coating two times to eliminate an irregular color. As a result, thick paintfilms are formed on the roots of thread, making it difficult to fit into the internal thread. To simultaneously solve the abovementioned two issues, two measures were executed. One was to apply the black film using trivalent chromium as an undercoatof dip-coating. The second was to develop paints that the amount of pigments in paints was adjusted on the assumption of thecolor of the undercoat. Thus a proper fit of thread was ensured when fastening in addition to a satisfactory black appearance
even with the dip-coating only once. Also, the friction coefficient was controlled at an appropriate level by the selection of friction
modifier. Moreover, the adhesion was improved by the enhancement of anchor effect of coating with the elimination of finishingprocess of the black chemical conversion film, and the requested corrosion resistance was achieved.

6. Paper No.(JSAE/SAE)
20159720 / 2015-32-0720
7. Paper title
Reduction in costs and environment Impact of The Composite Plating Solution
Naoyuki Hirose (Kawasaki Heavy Industries, Ltd.)
8. Authors (Affiliation)
9. Abstract
Our company adopts a cylinder-bore which is composite plated for weight saving and high output characteristics of the
motorcycle engines.
The composite-plated-cylinder has good wear resistance in an efficient performance while there are some problems to control
the composite plating solution since this solution contains particles which make filtration and electrolysis difficult.
Therefore we need to renew the solution within the stated periods, which brings about high cost and environment impact.
Thus we developed a recycle and reuse system by the used composite-plating-solution.
This method will cut costs by 60% approximately and reduce environment impact by reducing waste of plating solution.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181006
10：30 - 11：30
Alternative Fuels III
Koji Yoshida (Nihon University)
Robert Kee (Queen’s University Belfast)

6. Paper No.(JSAE/SAE)

20159826 / 2015-32-0826
Effects of Injection Timing and Injection Pressure on Combustion Characteristics and Emissionsof Ethanol ED95 under Partially Premixed Combustion Condition
Rachen Chumueang and Yossapong Laoonual, (King Mongkut's University of Technology
Thonburi (KMUTT), Thailand), Nuwong Chollacoop National (Metal and Materials Technology
Center (MTEC), Thailand)

7. Paper title
8. Authors (Affiliation)

9. Abstract
The purpose of this study is to investigate the effects of injection timing and injection pressure on combustion characteristics andemissions of the direct injection single cylinder CI engine fueled with ethanol ED95 fuel (95% hydrous ethanol blended with 5%commercial additive by volume) under partially premixed combustion condition. The engine was modified to increase thecompression ratio from 18 to 28. The experiment was tested at maximum engine load under a constant engine speed for all
testing conditions.
The experimental results show a lower coefficient of variation (COV) for the indicated mean effective pressure (IMEP), which
implies that higher combustion stability is achieved when the injection timing is advanced. However, the ignition delay
significantly increases. In addition, when injection timing is advanced and the injection pressure is increased, THC and CO
emissions increase due to lower combustion efficiency. Despite limitation of working operation at high load on ED95, it isremarkable to note that the indicated thermal efficiency of all ED95 experiments are achieved slightly higher compared to diesel.
6. Paper No.(JSAE/SAE)
7. Paper title

20159797 / 2015-32-0797
A Comparative Analysis of Combustion Process, Performance and Exhaust Emissions in Diesel
Engine Fueled with Blends of Jatropha Oil-Diesel Fuel and Jatropha Oil-Kerosene
Takaaki Yamaji (Kanazawa Institute of Technology )8. Authors (Affiliation)
9. Abstract
A comparative study was performed by use of blends of Jatropha oil/diesel fuel and Jatropha oil/kerosene in order to investigate
the feasibility of direct utilization of Jatropha oil in DI diesel engine. The aim of mixing Jatropha oil into diesel fuel and kerosene
was to mitigate the impacts of physical properties of Jatropha oil.
Mixing fraction of Jatropha oil was changed at low and partial loads in a diesel engine equipped with a common-rail fuel injection
system, while other experimental conditions were fixed. Experimental result at low load demonstrated that mixing 60 vol.% ofJatropha oil gave no significant impact on indicated thermal efficiency whereas further increase of Jatropha oil deteriorated thethermal efficiency. Though, particulate matter (PM) increased with increase of Jatropha oil. At partial load where double injection
was used, blends with 80 vol.% maintained indicated thermal efficiency and PM identical with diesel fuel. These observations
were common for Jatropha oil/diesel fuel and Jatropha oil/kerosene blends, although there was a difference in PM amount at
low load. To gain insight into the combustion process, ignition and combustion processes were visualized by use of an opticallyaccessible engine. The high speed movies showed the influence of physical properties of Jatropha oil on timings and locations ofignition and combustion.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181007
10：30 - 12：00
Measurement & Simulation II
Hideyuki Ogawa (Hokkaido University)
Giovanni Ferrara (University of Florence)

6. Paper No.(JSAE/SAE)

20159711 / 2015-32-0711
Experiments and Simulations of a Lean -Boost Spark Ignition Engine for Thermal Efficiency
Improvement
Sok Ratnak, Jin Kusaka, and Yasuhiro Daisho (Waseda University) Kei Yoshimura, and Kenjiro
Nakama (SUZUKI MOTOR CORPORATION)

7. Paper title
8. Authors (Affiliation)

9. Abstract
Primary work is to investigate premixed laminar flame propagation in a constant volume chamber of iso-octane/air combustion.
Experimental and numerical results are investigated by comparing flame front displacements under lean to rich conditions. As
the laminar flame depends on equivalence ratio, temperature, and pressure conditions, it is a main property for chemical reaction
mechanism validation. Firstly, one-dimensional laminar flame burning velocities are predicted in order to validate a reduced
chemical reaction mechanism. A set of laminar burning velocities with pressure, temperature, and mixture equivalence ratio
dependences are used in a 3D-CFD calculation to compare the predicted flame front displacements with that of experiments. It
is found that the reaction mechanism is well validated under 1D and 3D combustion flame calculations. Next, lean experiments
are operated in a SI engine by boosting intake pressure to maintain high efficiency without output power penalty. The peakindicated thermal efficiency are finally achieved under λ=1.3 with intake manifold absolute pressure 150 kPa in experiment….

6. Paper No.(JSAE/SAE)
20159728 / 2015-32-0728
7. Paper title
Development of Measurement Technic on Propagating Flame by Densely Installed Ion-probes
8. Authors (Affiliation)
Tomoaki Yatsufusa, Shinsuke Miyata, Koji Ishibashi (Hiroshima Institute of Technology)
9. Abstract
A new technic to measure the propagating flame precisely by using densely installed multiple ion-probes has been developed.
This system targets the high-intensity and pulsatile combustion, including knocking in gasoline engine, and oscillating combustionin burner or gas turbine combustor. In such environment, observation of details in the combustor by visualization is generally
limited because of the strength of observation window. In contrast, ion-probe is physically and thermally strong enough to enduresuch environment. In the present study, characteristics of the combustion measurement were investigated using the different
types of propagating flame with various LPG-oxygen-nitrogen mixtures. The composition of the mixture was stoichiometric LPGoxygen diluted with nitrogen. Nitrogen dilution ratio was varied to control the flame propagation velocity. Minimum andmaximum propagation velocity tested in the series of experiment was a few meters per second and about 2300m/s respectively.
This range covers most type of combustions utilized in the industrial field. The result shows….
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159748 / 2015-32-0748
Combustion Diagnostics Using Time-Series Analysis of Radical Emissions in a Practical Engine
Nobuyuki Kawahara, Shota Hashimoto, Eiji Tomita (Okayama University)

The objective of this study is to investigate the initial flame propagation characteristics of turbulent flame in an engine cylinder
through time-series analysis of radical emissions. A spark plug with optical fiber was developed in this study. The plug sensor is
M12 type that makes it possible to mount in practical engine. The spark plug sensor can detect radical emissions in time-resolved
spectra through time-series spectroscopic measurement. In this spectra, some kinds of radical emissions such as OH*(306 nm),
CH*(431 nm) and C2*(517 nm) based on principle of chemiluminescence are observed. In this study, the spark plug sensor wasapplied to both compression-expansion machine (CEM) and practical engine. As a result of CEM with bottom viewed high-speed
camera, three kinds of spectra could be detected. At first, after the spark, there were radical emissions of the CH* and C2* in casethat a spark plug sensor detected the flame front, and then the CO-O recombination emission was observed in the burned gas.
As a result of practical engine, an hour durable experiment for spark plug sensor was implemented to confirm its durability bypractical engine with high engine speed at wide-opened throttle….

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181008
10：30 – 12：00
Engine Technology III
Takahito Murase (Kawasaki Heavy Industries, Ltd.)
Patrick Pertl (Graz University of Technology)

6. Paper No.(JSAE/SAE)

20159805 / 2015-32-0805
Study of Optimization of Reciprocating Parts for General-purpose Engine with Aluminum-alloy
Connecting Rods
Masami Okubo, Masato Suzuki (Honda R&D Co., Ltd.)7. Paper title
8. Authors (Affiliation)
9. Abstract

The connecting rods employed in most of general-purpose engines with a power from 1.5 kW to 10 kW are manufactured fromaluminum alloy in order to increase productivity and reduce weight, and therefore display lower material strength than steel
connecting rods. In terms of operating conditions, general-purpose engines are frequently operated under high load while being
held at a comparatively low engine speed, necessitating strength and durability in relation to combustion pressure. Realizing abalance between the rigidity of each part is an important factor in reconciling the achievement of weight reduction in thereciprocating parts while also keeping strength. The research discussed in this paper developed a structure optimization system
to examine shape parameters for reciprocating parts targeting 4 kW class engines, and studied shapes that would balance thereduction of weight with the keeping of strength. These realizes design shapes of 4 kW class engines in which the stress generated
on each part is equivalent to or lower than the stress generated on the mass-production shape, while reducing the mass ofreciprocating parts by approximately 6% (compared to the initial shape). Investigation using reciprocating shapes of generalpurpose engines with different power showed that shapes of reciprocating parts with the smallest weight had the same
dimension pattern as discussed above irrespective of the cylinder bore size.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159719 / 2015-32-0719
Development of the XMv3 High Efficiency Cycloidal Engine
D. Littera, M. Nickerson, A. Kopache, G. Machamada, C. Sun, A. Schramm, N. Medeiros, K.
Becker, N. Shkolnik, A. Shkolnik (LiquidPiston, Inc.)

9. Abstract
The demand for lighter, smaller, more efficient, and more powerful engines calls for a rethinking of the traditional internal
combustion engine (ICE). This paper describes development progress of LiquidPiston’s small rotary engine, the XMv3, which
operates on a Spark-Ignited (SI) variant of its patented High Efficiency Hybrid Cycle (HEHC). This thermodynamic cycle, which
combines high compression ratio (CR), constant-volume combustion, and over-expansion, has a theoretical efficiency of up to
75% using air-standard assumptions and first-law analysis. XMv3 displaces 70 cc (23 cc per each of three working chambers) andis gasoline fueled. The engine is simple, having only two primary moving parts, which are balanced to prevent vibration. The ‘X’engine geometry utilized by XMv3 can be considered an inverted ‘Wankel’, retaining the traditional Wankel’ rotary advantages ofhigh power density and smooth operation, while also overcoming some of Wankel’s inherent performance limitations. These
include inflexible combustion chamber shape, and lubrication and emissions challenges…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159817 / 2015-32-0817
Thermodynamic Limits of Efficiency Enhancement of Small Displacement Single-Cylinder
Engines
Alexander Trattner, Florian Kupelwieser, Patrick Pertl, Franz Winkler, Stephan Schmidt, Roland
Kirchberger (Graz University of Technology)

9. Abstract
Millions of small displacement single-cylinder engines are used for the propulsion of scooters, motorcycles, small boats andothers. These SI-engines represent the basis of an affordable mobility in many countries, but at the same time their efficiency isquite low. Today, the limited fossil fuel resources and the anthropogenic climate require a sustainable development of
combustion engines, the reduction of fuel consumption being an important factor. A variety of different strategies (turbocharging, cylinder deactivation, direct injection, etc.) are investigated here to increase the efficiency of multi-cylinder engines. In
the case of small displacement single-cylinder engines, other strategies are required because of their special design and the highpressure on costs.
In the context of this paper different layout parameters which have an influence on the working process are investigated, withthe aim of increasing the efficiency of small displacement single-cylinder engines…

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181004
13：30 - 14：30
Advanced Combustion II
Hiroya Ueda (Honda R&D Co., Ltd.)
Franz Winkler (Graz University of Technology)

6. Paper No.(JSAE/SAE)

20159771 / 2015-32-0771
Influence of Ca-, Mg-and Na-based Engine Oil Additives on Abnormal Combustion in a Sparkignition Engine
Kenta Miura, Kento Shimizu, Norikuni Hayakawa, Tomomi Miyasaka, Akira Iijima, Hideo Shoji(Nihon University) Toshimasa Utaka, Kazushi Tamura, Hideki Kamano (Idemitsu Kosan Co.,Ltd.)

7. Paper title
8. Author (Affiliation)

9. Abstract
One issue of downsized and supercharged engines is low-speed pre-ignition (LSPI) that occurs in the low-speed and high-load
operating region. One proposed cause of LSPI is the influence of the engine oil and its additives. However, the effect of engine oil
additives on pre-ignition and the mechanism involved are still not fully understood. This study investigated the influence of engine
oil additives on abnormal combustion in a spark-ignition engine. A four-stroke air-cooled single-cylinder engine with a side valvearrangement was used in conducting combustion experiments. The research methods used were in-cylinder pressure analysis,
in-cylinder visualization and absorption spectroscopic analysis. Engine oil additives were mixed individually at a fixed
concentration into a primary reference fuel with an octane number of 50 and their effect on knocking was investigated.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Author (Affiliation)

20159796 / 2015-32-0796
Effect of Xylene ratio on the secondary atomization with UV laser
Hiroshi Enomoto, Naoki Iwafune, Masaya Morii, Ryo Honda, Noboru Hieda, Yoshikazu
Teraoka(Kanazawa University.)

9. Abstract
In our study, phenomena is observed that 30 μm droplet become breakup by UV laser irradiation. This phenomena change bycomposition of droplet. Then we focused on difference of absorbance, hexadecane and o-xylene are used as fuel. The former do
not absorb UV enough and the latter do absorb UV enough. And authors examined the relation mixing ratio and breakup
phenomena using blended fuel which consist of hexadecane and o-xylene. With regard to the UV laser we used, wavelength is266 nm, flash of time is 10 nsec and laser intensity is 15 mJ. CCD camera, strobe light with 180 nsec flash time and lens of ten
magnification were used for observation. As a result, we obtained the following; 1) A state of breakup phenomena depend on
concentration of o-xylene. 2) The absorbance is not related with a state of breakup phenomena.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181005
13：30 - 14：30
Materials II
Hirotaka Kurita (Yamaha Motor Co., Ltd.)
Brent Dohner (The Lubrizol Corporation)

6. Paper No.(JSAE/SAE)

20159830 / 2015-32-0830
Development of Fracture-split Connecting Rods made of Titanium Alloy for Use on Supersport
Motorcycles
Tsuyoshi Kubota, Kosuke Doi, Takeshi Murakami, Yuuki Kojima, Tetsu Miura (Yamaha Motor Co.,Ltd.)

7. Paper title
8. Authors (Affiliation)

9. Abstract
A connecting rod made of titanium alloy is effective for lower fuel consumption and higher power output comparing to a steel
one because the titanium connecting rod enables to reduce the weight of both of reciprocating and rotating parts in an entire
engine substantially. But up to now, it has been adopted only to expensive and small-lot production models because a material
cost is high, a processing is difficult and a wear on a sliding area should be prevented. In order to adopt the titanium connecting
rods into a more types of motorcycles, appropriate materials, processing methods and surface treatment were considered. Hot
forging process was applied not only to reduce a machining volume but also to enhance a material strength and stiffness. And
the fracture-splitting (FS) method for the big-end of the titanium connecting rod was put into a practical use. The brittle fractured
surface of the big-end by FS method is useful for not only cost reduction but also ensuring the stiffness of the connecting rod
compensating the low elastic modulus of titanium alloy comparing to that of ferrous alloys. In this study, the evaluation resultsof materials characteristics related to these processes and functional property of surface treatment is described. From theseevaluations, the capabilities of FS titanium connecting rods were quantitatively shown. FS titanium connecting rods have been
produced for the supersport motorcycle engines from November 2014.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159850 / 2015-32-0850
High Performance Powder-Forged Connecting Rods for Direct
Injection Turbocharged Engines
Edmond Ilia, Giorgio Lanni, Kevin Tutton, Doug Sinclair, and Michinari Suemasu (Metaldyne
Performance Group)

9. Abstract
The introduction of direct injection turbocharged engines has increased the need for higher performance connecting rods, able
to withstand higher compressive loads in operation. In this respect, new materials with high compressive yield strength andfatigue performance for powder-forged connecting rods, such as HS150, HS160, and HS170M, were developed and successfully
introduced in production. Among them, HS170M, currently used to manufacture connecting rods for several high performanceengines, not only has exceptional strength, but less variation in mechanical properties as a function of its chemical composition
variation within the specified limits compared to other powder-forged materials. Furthermore, recent strength tests conductedat engine operating temperatures on specimens machined from connecting rods have shown some very interesting results：
despite the fact that the mechanical properties of most steels decrease at higher temperatures, the strength of Cu-rich HSmaterials increases due to second phase strengthening provided by nano size Cu precipitates. For this reason, powder-forgedconnecting rods manufactured with HS170M are stronger than their dropforged counterparts manufactured with micro alloyedsteels. Additionally, advancements in design and manufacturing, such as design optimization, post-delubrication shot peening,enhanced shot peening, etc., have resulted in higher performance powder-forged connecting rods and, as a result, in mass
reductions, thus further contributing to fuel economy and reduced emissions.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181007
13：30 - 14：30
Measurement & Simulation III
Shigeru Fujii (Yamaha Motor Co., Ltd.)
Giovanni Ferrara (University of Florence)

6. Paper No.(JSAE/SAE)
7. Paper title

20159731 / 2015-32-0731
Acceleration Performance Analysis for Rubber V-belt CVT with Belt Tension Clutching
Yusuke Okimura, Moriyuki Sakamoto, Seiji Itoo, Akiyuki Yamasaki(Kawasaki Heavy Industries, Ltd.)

8. Authors (Affiliation)
9. Abstract

The power train system for Utility Vehicles (UVs) or All-Terrain Vehicles (ATVs) mainly consists of a rubber V-belt CVT. The
adjustment of the CVT specification requires many steps to realize the shifting operations of the CVT so as to satisfy theacceleration feeling of the driver.
In this paper, we report on the simulation technology that predicts the transient behavior during an acceleration of the vehicle
equipped with a belt tension clutching CVT, which has both functions of the shift operation and the clutch action. By using thedeveloped simulation technique, it has become possible to adjust the CVT specifications efficiently.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159745 / 2015-32-0745
Systematic Modeling Technique by using Function Power Graph on the Centrifugal Anti-lockBraking System Simulation
Yu-fan Chen, Cheng-ping Yang, I-ming Chen, and Tyng Liu(Department of Mechanical Engineering, National Taiwan University)

9. Abstract
A systematic modeling methodology using Function Power Graph (FPG) to analyze mechanical systems is proposed in this paper,and the novel Centrifugal Anti-lock Braking System (C-ABS) is used as the example. In this paper, a systematic modeling process
combined with the FPG method and SimulationX-based modeling has been demonstrated. First, schematic diagram and working
principle of the C-ABS model has been developed and illustrated. Based on the FPG method, several symbols (power unit,
clutch/brake unit, and connection unit) for the C-ABS have been introduced. Second, system mode, operation, and function
inspection of the C-ABS have been analyzed. Then, each component model of the C-ABS (wheel, disc brake, gearbox, andcentrifugal braking device) has been established, and then the schematic diagram of the C-ABS has been transferred into practicalimage of the system structure (or physical model) through SimulationX to identify the dynamic characteristics of the C-ABS. In
addition, comparison between the C-ABS and conventional ABS has been made. Finally, an experimental platform of the C-ABS
has been set up and the experiment measurements are in agreement with our SimulationX-based simulation results. According
to this systematic modeling technique of the FPG method, the characteristics of any new system structure can be easily identified.
Then, through CAE software, such as SimulationX, a physical model can be easily created to achieve better performance anddevelopment of system design and system analysis.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Wednesday, November 181008
13：30 - 14：30
Hybrids, Electric Drives & Fuel Cells
Yasuyuki Muramatsu (Yamaha Motor Co., Ltd.)
Robert Kee (Queen’s University Belfast)

6. Paper No.(JSAE/SAE)

20159740/2015-32-0740
Single Cylinder 25 kW Range Extender： Development for Lowest Vibrations and Compact
Design Based on Existing Production Parts
Christian Hubmann, Hubert Friedl (AVL List-GmbH)
Stefan Gruber, Nigel Foxhall (BRP-Powertrain GmbH & Co KG)

7. Paper title
8. Authors (Affiliation)

9. Abstract
The automotive trend towards increased levels of electrification is showing a clear direction for hybrid technologies. Nowadays
Mild- and plug-in-hybrids open a very wide area of future developments whereas battery electric vehicles (BEV) are still evident
but still perceived as niche products with limited production volumes. Nevertheless, major OEMs are working on these kinds ofvehicles and have also brought such EV concepts into series production.
All of these designs show a clear trend that, beside the topic of electric traction motor and energy storage systems, the internal
combustion engine (ICE) is also coming into focus again. In many of these vehicles the range extender (RE) unit is foreseen as an
emergency unit to recharge the batteries if the state of charge (SOC) is too low.
One of the major advantages of a BEV over other designs is the very good acoustic behavior, so the NVH performance becomesthe most challenging topic for RE development.
AVL has already investigated, published and partially also developed different types of RE units：
・ single rotor Wankel [1]・ 2 cylinder inline [2]・ single cylinder [3]Amongst others, a significant benefit of the single cylinder RE is the possible usage of parts from already existing powersports
applications providing technology which typically is needed to fulfill the requirements of a BEV, such

6. Paper No.(JSAE/SAE)
20159753/2015-32-0753
7. Paper title
A Study of Function Control in the Electric Motorcycle
8. Authors (Affiliation)
Daisuke Kawai, Yoshimoto Matsuda, Takahito Murase (Kawasaki Heavy Industries, Ltd.)
9. Abstract
Generally, it is thought that control is simpler than an Internal Combustion Engine (ICE)-Motorcycle (MC) as for the Electric
Vehicle (EV) type MC. However, there is few characteristic to the ICE-MC to the EV-MC and it cannot get good performance
without control for EV-MC.
We study the methodology for design and evaluation an EV-MC. In this approach, we developed the prototype EV-MC having
manual transmission. In our study, we think that EV-MC having manual transmission is feature in comparison with other general
EV-MC. From this feature, we had to develop the function control in addition to standard EV-MC function control.
This paper provides a function control for EV-MC having manual transmission. In this paper, we arrange the problem points of
EV-MC which put electric propulsion motor and manual transmission together at first. And report the result that studied amethod to solve the problem points.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191005
8：30 - 10：00
HCCI I
Tatsuya Kuboyama (Chiba University)
Giovanni Vichi (University of Florence)

6. Paper No.(JSAE/SAE)

20159706 / 2015-32-0706
Experimental Investigation and Analysis of Homogeneous Charge Compression Ignition in a

7. Paper title
8. Authors (Affiliation)
9. Abstract

Two-Stroke Free-Piston Engine
Stephan Schneider, Horst E. Friedrich (German Aerospace Center)

The present paper deals with the experimental investigation of homogeneous charge compression ignition in a free-oscillating
two-stroke free-piston engine. The Free Piston Linear Generator (FPLG), which is being developed at the German Aerospace
Center (DLR), is an innovative internal combustion engine for the generation of electrical power. This concept can for example beused in hybrid electric vehicles, as an auxiliary power unit or in combined heat and power units. The FPLG consists of three main
components. In the two-stroke combustion unit, heat is released by burning a fuel-air mixture and a piston is accelerated. This
energy is then converted into electric energy in the second component, the linear generator. This subsystem consists ofelectromagnetic coils as a stator and permanent magnets as a mover. The mover is rigidly coupled to the combustion piston.….
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159770 / 2015-32-0770
Experimental and Numerical Study of HCCI Combustion using Cooled EGR
Munehiro Matsuishi, Yuya Higuchi, Yasuhide Abe, Yuma Ishizawa, Akira Iijima, Hideo Shoji(Nihon University) Kazuhito Misawa, Hiraku Kojima, Kenjiro Nakama (SUZUKI MOTORCORPORATION)

9. Abstract
Unresolved issues of Homogeneous Charge Compression Ignition (HCCI) combustion include an extremely rapid pressure riseon the high load side and resultant knocking. Studies conducted to date have examined ways of expanding the region of stable
HCCI combustion on the high load side such as by applying supercharging or recirculating exhaust gas (EGR). However, the effectof applying EGR gas to supercharged HCCI combustion and the mechanisms involved are not fully understood.
In this study, the effect of EGR gas components on HCCI combustion was investigated by conducting experiments in which
external EGR gas was applied to supercharged HCCI combustion and also experiments in which nitrogen (N2) and carbon dioxide(CO2) were individually injected into the intake air pipe to simulate EGR gas components. In addition, HCCI combustion reactions
were analyzed by conducting chemical kinetic simulations under the same conditions as those of the experiments.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159772 / 2015-32-0772
A Study of Streamer-discharge-assisted Autoignition Combustion using an Optically Accessible
EngineMasanori Yamada, Junki Sahara, Takashi Shimada, Yuki Yoshida, Chibin Rin, Akira Iijima,
Tomohiko Asai, Mitsuaki Tanabe, Hideo Shoji (Nihon University)

9. Abstract
It is difficult to control the ignition timing of Homogeneous Charge Compression Ignition (HCCI) engines because they lack aphysical means of igniting the mixture. Another issue of HCCI engines is their narrow operating range owing to the occurrence of
misfiring at low loads and abnormal combustion at high loads. As a possible solution to these issues, this study focused on thegeneration of a streamer discharge using nonequilibrium plasma as a means of assisting HCCI combustion. A two-stroke engine
that allowed visualization of the entire bore area was used in this study. A primary reference fuel blend (50 RON) was used as thetest fuel. The streamer discharge was continuously generated in the end-gas region during a 360 deg. interval from the scavenging
stroke to the exhaust stroke using a spark plug from which the ground electrode had been removed. Experiments were conductedin which the applied voltage of the streamer discharge was varied to investigate its effect on combustion. The results showedthat the application of the streamer discharge to an HCCI engine has the effect of advancing the ignition timing and moderating
the rapid rate of combustion. It was also observed that these characteristics can be varied depending on the applied voltage ofthe streamer discharge.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191006
8：30 - 10：00
Emissions I
Hiromi Deguchi (SUZUKI MOTOR CORPORATION)
Leonid Tartakovsky (Technion - Israel Institute of Technology)

6. Paper No.(JSAE/SAE)
7. Paper title

20159783 / 2015-32-0783
Development of three-way catalytic converter diagnostic strategy
Yong Fu Syu, Jia Siou Wu, Jhih Si Syu, Bo Chiuan Chen, Yuh Yih Wu (National Taipei University ofTechnology)

8. Authors (Affiliation)
9. Abstract

In this paper, the off-line analysis method is applied to develop three-way catalytic converter (TWC) diagnostic strategy including
oxygen sensor (O2 sensor) diagnostic strategy with common narrow band oxygen sensor (EGO sensor) in Matlab/Simulink
software. Moreover, Mototron ECU (Engine Control Unit) is used for monitoring catalyst deterioration. However, aged catalyst isdifficult to possess so the different catalytic conversion efficiency (CCE) is simulated by using exhaust by-pass valve. The CEC(China Engine Corporation) 1L V2, four stroke, water-cooled engine is selected as target engine to conduct engine dynamometer
test. After making sure O2 sensor operates normally, the catalyst diagnostic strategy test is executed. The experimental resultshows that the catalyst deterioration accurately can be detected when the failure phenomenon takes place. In order to makesure the robustness of proposed diagnostic strategy, the common diagnostic strategy, switching times and amplitude ratio, isestablished to compare accuracy of proposed strategy. Shown as result, when the CCE is closed to 50%, the proposed strategy
can reduce possible misjudgment.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)
9. Abstract

20159802 / 2015-32-0802
Investigation of high achievable pollutant reduction on a “State of the Art” Indian 2 wheelers Technology road map to a cleaner air
Francois Jayat, Sven Seifert (Continental Emitec GmbH)

Affordable, efficient and durable catalytic converters for the two and three wheeler industry in developing countries are required
to reduce vehicle emissions and to participate in a cleaner and healthier environment. As a contribution Continental Emitec
started a comprehensive testing program with a state of the art 180 cc Bharat Stage (BS) III Indian motorcycle. The program
consists of testing the state of the art of Metallic substrates with structured foils with various catalyst sizes and positions (originalor close coupled). The publication presents a short literature survey and the results of the investigation with a big catalyst volume
mounted in underfloor position as well as in close coupled position, gained over the World-wide harmonized Motorcycle Test
Cycle, considering the two possible vehicle classifications of this motorcycle, Sub-Class 2.1 and Sub-Class 2.2. This catalyst is basedon metal turbulent structured catalyst substrate with longitudinal foil structures (LS-Design™). The results are showing that all
pollutant emissions could be reduced to very low levels if an appropriated technology road map is applied.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159821 / 2015-32-0821
Characterization of Biodiesel Particle Emission in Trapping and Regeneration Processes on
Cordierite Diesel Particulate Filter
Komkla Siricholathum, Preechar Karin, Chinda Charoenphonphanich (King Mongkut’s Instituteof Technology Ladkrabang), Katsunori Hanamura (Tokyo Institute of Technology), Nuwong
Chollacoop(National Science and Technology Development Agency)

9. Abstract
As well-known, the diesel engine has the highest thermal efficiency at the same load as compared with internal combustion
engine but its disadvantage is particulate matter (PM) emitted to the atmosphere. The studies of this paper were divided into
two parts. The first part studied the quantity of PM from the both diesel and biodiesel fuels at 80% load (2400 rpm) by thetrapping process on diesel particulate filter (DPF) used in a partial flow dilution tunnel. The second part studied the regeneration
process of PM under the flow rate of oxygen and nitrogen gas of 13.5 L/min with 10%, 15%, and 21% of oxygen gas. The result
showed that amount of PM from biodiesel fuel was lower around two times than PM from diesel fuel. The duration inregeneration process of biodiesel’s PM was shorter than diesel while increasing of oxygen percentage can reduce regeneration
time.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191007
8：30 - 9：30
Measurement & Simulation IV
Shigeru Fujii (Yamaha Motor Co., Ltd.)
Stephan Schmidt (Graz University of Technology)

6. Paper No.(JSAE/SAE)
7. Paper title

20159811 / 2015-32-0811
Development of Fatigue Durability Evaluation Technology for Motorcycle Frame
Daichi Kano, Nagasaka Kazuya, Go Matsubara, Takumi Kawasaki,

8. Authors (Affiliation)

Akiyuki Yamasaki, Hiroyuki Kasugai, Hideaki Saito(Kawasaki Heavy Industries, Ltd.)

9. Abstract
In the development of a motorcycle frame, the balance between high performance and reliability and a short development
period are important. In this study, a fatigue durability evaluation technique for a motorcycle frame was developed to enablehighly accurate development within a short period of time. Furthermore, we developed a shaking table excitation system as ameans to supplement the road test.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159739 / 2015-32-0739
Prediction of fatigue strength of motorcycle exhaust system considering vibrating and thermal
stresses
Hiroshi Kuribara, Hiroshi Horikawa, Takashi Teraguchi, Takanori Nagata, Daisuke Kitamura(Honda R&D Co., Ltd.)

9. Abstract
A method applicable in the design stage to predict fatigue strength of a motorcycle exhaust system was developed. In thisprediction method, a vibrating stress, thermal stresses, stresses resulting from the assembling of the exhaust system components
and a deterioration of fatigue strength of materials originated from high temperature were simultaneously taken into account.
For the prediction of the vibrating stress, flexible multibody dynamics was applied to get modeling accuracy for vibration
characteristics of the entire motorcycle and the exciting force delivered from engine vibrations. The thermal conduction analysis
and the thermal deformation analysis based on finite element method (FEM) were applied for the prediction of thermal stresses
in the exhaust system components. The temperature distribution on the surfaces of the exhaust system components is requiredfor calculations of the thermal stresses. The heat transfer analysis, which was composed by combing a one-dimensional (1D)
engine cycle simulation and an air flow simulation around the vehicle by 3D-CFD, was used for the estimation of temperature
distributions. To validate the developed method, the correlations between the simulations and the actual measurements wereanalyzed for the vibrating stress, the temperature distribution, the thermal stresses and the fatigue safety factor….

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191004
11：00 - 12：30
Functional Safety
Takashi Mitome (SUZUKI MOTOR CORPORATION)
Tony Szczotka (Robert Bosch LLC)

6. Paper No.(JSAE/SAE)

20159714 / 2015-32-0714
Research on Method for Classifying Injury Severity Using Motorcycle Accident Data for ISO
26262
Yuji Arai, Makoto Hasegawa, Takeshi Harigae (Japan Automobile Research Institute)

7. Paper title

8. Authors (Affiliation)
9. Abstract
ISO 26262 was established in 2011 as a functional safety standard for passenger cars. In this standard, ASILs (Automotive Safety
Integrity Levels) representing safety levels for passenger cars are determined by evaluating the hazardous events associated witheach item constituting an electrical and/or electronic safety-related system according to three evaluation criteria including injury
severity. On the other hand, motorcycles will be included in the scope of application of ISO 26262 in the next revision. It is
expected that a severity evaluation for motorcycles will be needed because motorcycles are clearly different from passenger carsin vehicle mass and structure. Therefore, this study focused on severity class evaluation for motorcycles. A method of classifying
injury severity according to vehicle speed was developed on the basis of accident data. In addition, a severity table for motorcycles
classifying injury severity according to vehicle speed for each accident type was produced using accident data involved withmotorcycles in Japan.

6. Paper No.(JSAE/SAE)
20159746 / 2015-32-0746
7. Paper title
ISO 26262 Controllability Evaluation Technique by Expert Riders
Maki Kawakoshi, Takashi Kobayashi, Makoto Hasegawa (Japan Automobile Research Institute)
8. Authors (Affiliation)
9. Abstract
Controllability (C class) represents the level of the ability to avoid harm and is one of the parameters that determine theAutomotive Safety Integrity Level in the ISO 26262 functional safety standard, which applies to the electrical and/or electronicsystems. This study aimed to consider an appropriate C class evaluation technique for expert riders in applying ISO 26262 tomotorcycles.
This study attempted to show a C class evaluation method without deviation by the riders and presented examples of theevaluation of three hazardous events in actual vehicle tests. In addition, riders’ comments regarding their understanding of thecircumstances that resulted in the evaluation were collected, and the correspondence of these comments was examined.
We selected “unintended acceleration” or “unintended deceleration” due to the malfunction of the electronic throttle control
system as hazard examples and conducted tests to reproduce hazardous events. The expert riders evaluated the C class using
the evaluation method that we considered. For unintended acceleration when following a preceding vehicle or during turning,
the C classes were evaluated from C0 (control in general) to C3 (difficult to control or uncontrollable) depending on theacceleration level. The results of C class evaluation by all riders were found to be similar. For unintended deceleration during
turning, all riders…
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159794 / 2015-32-0794
Examination of the Validity of Connections between MSILs and ASILs in the Functional Safety
Standard for Motor Vehicles
Sei Takahashi, Hideo Nakamura (College of Science and Technology, Nihon University), Makoto
Hasegawa (Japan Automobile Research Institute)

9. Abstract
ISO 26262 (Road vehicles – Functional safety), a functional safety standard for motor vehicles, was published in November 2011.
In this standard, hazardous events associated with each item constituting a safety-related system are assessed according to threecriteria, namely, Severity, Exposure, and Controllability, thereby determining ASILs (Automotive Safety Integrity Levels)
representing safety levels for motor vehicles. Although motorcycles are not included in the scope of application of the current
edition of ISO 26262, it is expected that motorcycles will be included in the next revision. However, it is not appropriate to directly
apply ASILs to motorcycles, because the situation of usage in practice presumably differs between motorcycles and motor
vehicles.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191005
11：00 - 12：30
HCCI II
Tatsuya Kuboyama (Chiba University)
Francesco Balduzzi (University of Florence)

6. Paper No.(JSAE/SAE)

20159790 / 2015-32-0790
Influence of Combustion Chamber Wall Temperature on Combustion in an HCCI Engine Usingan Alternative Fuel
Takahiro Shima, Yuki Takamura, Hirotaka Suzuki, Keisuke Mochizuki, Akira Iijima, Koji Yoshida,
Hideo Shoji (Nihon University)

7. Paper title
8. Authors (Affiliation)
9. Abstract

Internal combustion engines today are required to achieve even higher efficiency and cleaner exhaust emissions. Currently,
research interest is focused on premixed compression ignition (Homogeneous Charge Compression Ignition, HCCI) combustion.
However, HCCI engines have no physical means of initiating ignition such as a spark plug or the fuel injection timing and quantity.
Therefore, it is difficult to control the ignition timing. In addition, combustion occurs simultaneously at multiple sites in the
combustion chamber. As a result, combustion takes place extremely rapidly especially in the high load region. That makes it
difficult for the engine to operate stably at high loads. This study focused on the fuel composition as a possible means to solvethese problems. The effect of using fuel blends on the HCCI operating region and combustion characteristics was investigatedusing a single-cylinder test engine.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159807 / 2015-32-0807
Influence of Internal EGR on Knocking in an HCCI Engine
Takashi Shimada, Yuki Yoshida, Chibin Rin, Masanori Yamada, Naoya Ito, Akira Iijima, Koji
Yoshida, Hideo Shoji (Nihon University)

9. Abstract
Homogeneous Charge Compression Ignition (HCCI) engines have attracted much attention and are being widely researched asengines characterized by low emissions and high efficiency. However, one issue of HCCI engines is their limited operating range
because of the occurrence of rapid combustion at high loads and misfiring at low loads. It is known that knocking accompanied
by in-cylinder pressure oscillations also occurs in HCCI engines at high loads, similar to knocking seen in spark-ignition engines.
In this study, HCCI combustion accompanied by in-cylinder pressure oscillations was visualized by taking high-speed photographsof the entire bore area. In addition, the influence of internal exhaust gas circulation (EGR) on HCCI knocking was also investigated.
The visualized combustion images revealed that rapid autoignition occurred in the end-gas region during the latter half of the
HCCI combustion process when accompanied by in-cylinder pressure oscillations. It was also found that applying internal EGR
had the effect of moderating combustion by delaying the ignition timing, thereby suppressing in-cylinder pressure oscillations.

6. Paper No.(JSAE/SAE)
7. Paper title

20159847 / 2015-32-0847
Numerical performance prediction using experimental combustion model for controlled-autoignition natural gas engines
Toshiro Kiura, Hibiki Koga (Honda R&D Co., Ltd.)

8. Authors (Affiliation)
9. Abstract
This study was undertaken to develop a method of numerical performance prediction for application to the development ofcontrolled-auto-ignition (CAI) natural gas engines. By using a combustion model based on analyzed combustion data andintroducing this to a commercial one-dimensional gas dynamic simulator, we attempted to establish a means of attaining a highly
accurate performance prediction while reducing the calculation load. The combustion model was separately calibrated for twomodels, namely, the auto-ignition timing of the combustion and the mass fraction burned. As a result, the combustion modeling
was able to successfully predict the accuracy of the auto-ignition timing difference at 0.03 degree of crank angle on average, and0.95 degree in the 2σ region. Furthermore, the functions of the mass fraction burned were expressed using closely correlated incylinder parameters. To investigate the application of this numerical performance prediction method, a parametric study tomaximize the thermal efficiency of CAI natural gas engines was conducted. Different engine configurations with stroke /bore
ratios of 1.0 to 2.5 and intake/exhaust valve diameter ratios of 0.8 to 1.4 were examined, with the maximum net indicated thermal
efficiency being 45% for a stroke/bore ratio of about 2.0.and an intake/exhaust valve diameter ratio of 1.0. Using this approach,
it is possible to predict the performance electric control unit to ensure the stable running of a CAI natural gas engine….

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191006
11：00 - 12：00
Emissions II
Hiromi Deguchi (SUZUKI MOTOR CORPORATION)
Leonid Tartakovsky (Technion - Israel Institute of Technology)

6. Paper No.(JSAE/SAE)

20159824 / 2015-32-0824
Enhancing the performance of a catalyst formulation for a big displacement motorcycle for
future emission regulations, part 2
Marcus Bonifer, Rainer Kiemel (Heraeus Chemicals)

7. Paper title

8. Authors (Affiliation)
9. Abstract
In Europe the next level of emission regulations for motorcycles, Euro IV, is on the verge of introduction, followed by Euro V
around 2021. Together with the new emission regulations, the ECE R 40 testing cycle will become obsolete and the more realistic
World Motorcycle Testing Cycle (WMTC) will be introduced.
Current catalytic solutions for gasoline engines consist of so-called three way catalysts (TWC) that are able to reduce theemissions of CO, NOx and hydrocarbons (HC) below the regulatory emission limit. These catalysts mostly contain platinum (Pt),palladium (Pd) and rhodium (Rh) in different concentrations and ratios. Another important component is the so-called oxygenstorage material (OSC) which compensates for the fluctuations in lambda during acceleration and deceleration. Currently existingcatalyst formulations must be modified to fulfil the more stringent emission limits with simultaneous consideration of a more
realistic test cycle.
Last year we presented modifications of an existing Euro III catalyst formulation for a 690 cc motorcycle from model year (MY)2012. According to our customer, the result was a formulation that fulfilled the Euro IV emission regulation.
We would like to present results of our further modified Euro IV solution. For our tests, we used a 690cc motorcycle from MY2014;
this motorcycle was as a reference source of emissions to be able to compare the performance of different catalyst formulations.
With our results, we want to show that Euro V for motorcycles is technically possible.
6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159707 / 2015-32-0707
Development of Bengaluru Motorcycle Drive Cycle from Real World Data for Accurate
Prediction of Exhaust Emissions and Fuel Economy
Rashmita Khare, Pramod Reddemreddy, Abhijit Shankar Bahirat, Prashanth Anantha (BoschLtd. India, Robert Bosch Engineering and Business Solutions Pvt. Ltd. India)

9. Abstract
Urban transportation significantly contributes towards the rapid deterioration of air quality in the Indian cities. Growing
affordability has resulted in an increased two wheeler population across India. The Indian government has instituted introductionof emission legislation in phases to mitigate the impact on environment due to the increased growth. As a signatory to the United
Nations Economic Commission for Europe (UN-ECE) Global Technical Regulation (GTR)-2, the Worldwide Harmonized Motorcycle
Test cycle (WMTC) will be adopted as a standard test cycle for emission assessment beginning 2016. This cycle development was
based on the collection and analysis of driving behavior data and statistical information about motorcycles used in three different
regions (Europe, Japan and USA).
To understand the relevance in the context of driving patterns found in the India, the team developed a city specific drive cycle
which involved logging on-road vehicle data from several trips and dividing them into a database of microtrips. Using a customized
script on MATLAB, these microtrips were first segregated into different classes based on maximum speed attained. Minimum
error criteria for different parameters such as average speed, average acceleration, average deceleration, percentage
acceleration, percentage deceleration, percentage idle and percentage cruise were applied to select the microtrips from eachclass. A concatenation of these individual microtrips resulted in a city specific drive cycle which incorporates the urban driving
pattern of the city of Bengaluru. During the process of data logging, evaluation and scripting, the team also developed a standard
procedure to simplify repeating such an exercise at other urban locations.

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191007
11：00 - 12：30
Measurement & Simulation V
Tadao Okazaki (LEMA / Kubota Corporation)
Stephan Schmidt (Graz University of Technology)

6. Paper No.(JSAE/SAE)
7. Paper title

20159766 / 2015-32-0766
A reduced order turbo-charging model for real time engine torque profile control
Kazuhide Togai (Osaka Sangyo University), Hiroki Yamaura (Mitsubishi Motors Engineering),
Naoto Fujinaga (Mitsubishi Motors Corporation)

8. Authors (Affiliation)

9. Abstract
Torque profile control is one of required technologies for propulsion engines. A smaller parametric model is more
preferable for control algorithm design and evaluation. Mean value engine torque can be obtained from throttle
opening change using a transfer function. A transfer function for a turbocharged engine was investigated withthermo-dynamic equations for a turbine and a compressor and test data. A small turbocharged engine was tested to model the
air transfer process. Turbine speed was measured with temperatures, pressures and air mass flow. Turbine speed response is likea first order system to air mass flow into a combustion chamber. The pressure ratio at the compressor is approximated by a curve
proportional to the turbine speed square. Based on those findings, a reduced order model for describing dynamic air transfer
process with a turbocharger was constructed. The proposed model is compact and suitable for engine torque control design andcontroller implementation.

6. Paper No.(JSAE/SAE)
7. Paper title
8. Author (Affiliation)
9. Abstract

20159828 / 2015-32-0828
Development of data logger for motorcycles
Masashi Matsuo, Takeshi Morioka, Hitoshi Watanabe (Yamaha Motor CO., LTD)

The data loggers that are used on motorcycles are intended to measure the running data during races and when driving on closed
courses. These data loggers are small in size, lightweight, and optimized for mounting on motorcycles so that they do not affectthe vehicle dynamics. Consequently, almost all of these data loggers are not equipped with the amplifiers and filters necessary
for taking measurements from strain sensors. Most of the data loggers that have amplifiers and filters built into them are large insize and cannot be used on a motorcycle while it is being driven because of their poor durability, poor water resistance, and poor
dust resistance. However, it is necessary to carry out strain and acceleration measurements when developing a new motorcycle
body so that the body strength and motion characteristics can be understood [2][3]. Furthermore, the ability to increase thenumber of measurement channels and acquire position information is also being demanded to improve the efficiency ofdevelopment and deepen our understanding of the phenomena that occur during driving. Consequently, a new data logger wasdeveloped for use during the development of new motorcycle bodies….

6. Paper No.(JSAE/SAE)
7. Paper title
8. Authors (Affiliation)

20159763 / 2015-32-0763
Innovative approach and tools to design future two-wheeler powertrain
MILOSAVLJEVIC Misa, VENTURI Stephane, LE BERR Fabrice, DEGEILH Philippe, LAABIDI Samy,ZITO Gianluca, MAGAND Sebastien (IFP Energies nouvelles), RAYMOND Francois (D2T
Powertrain Technologies)

9. Abstract
As congestion increases and commute times lengthen with the growing urbanization, many customers will look for effective
mobility solutions. Two-wheeler are one of the solutions to deal with these issues, in particular if equipped with electrified
powertrains for minimized local noise and air pollutant emissions. Scooters powertrain technology is predominantly based on
Spark Ignition Engine (ICE) associated with a Continuously Variable Transmissions (CVT) and a Centrifugal Clutch. Nevertheless,even though CVT gives satisfaction in simplicity, fun to drive, cost effectiveness and vehicle dynamics, its efficiency is an
undeniable drawback. Indeed, a conventional CVT is wasting more than 50% of ICE effective power in customer driving conditions.
Consequently, those vehicles have high fuel consumption relative to their size, and are equipped with overpowered and heavyinternal combustion engines, allowing a large area for further improvements. Therefore, IFP Energies nouvelles (IFPEN) has
developed a physically based simulation tools for scooters powertrain analysis, design and control. ICE model is based on an
analytical calculation for indicated efficiency and frictions. CVT and centrifugal clutch are modeled using existing LMS Amesim
components and a specifically developed physical transfer function. The final model is in a good agreement with real figures, suchas fuel consumption and dynamics behavior of each system. Therefore, these methods and tools have proven to be relevant andtime effective to study….

Abstracts of Technical Sessions
1. Date2. Room.
3. Time4. Session
5. Chair (Affiliation),
Co-chair (Affiliation)

Thursday, November 191008
11：00 - 12：30
Vehicle Components
Masayuki Baba (Honda R&D Co., Ltd.)Thomas Lagö (QirraSound Technologies Europe AB)

6. Paper No.(JSAE/SAE)
20159750 / 2015-32-0750
7. Paper title
Development of Cost Advantageous Designs for Headlight System Using Light Emitting Diodes
8. Authors (Affiliation)
Yosuke Tsuchiya, Teppei Matsuzaki, Tetsuo Takeshige, Tsuyoshi Oguchi (Honda R&D Co., Ltd.)
9. Abstract
So far, the application of LED headlights to the motorcycle has been limited for only high-priced models, because LED light units
and the drivers are expensive. In our development, the cost reduction of light source units was examined by implementing
multiple medium intensity LEDs. Distributed mounting scheme was created for LEDs placed on the circuit board to meet the heatdissipation requirement without a heat sink, which is usually installed. By new mounting scheme, the requirement of heatdissipation has been successfully fulfilled by only using the copper foil layer. Moreover, by connecting LEDs in series, the drivercircuit configuration was made simple while separate circuits are generally required both for a high-beam and a low-beam. By
this configuration, the driver cost was reduced. With this circuitry change, some associated issues arose and measures weredevised to cope with them. In addition, the method of driver circuitry, established through applications for conventional
incandescent light sources, was applied to provide a discrete voltage in half-waves from the ACG apart from the supply from thebattery. Using this method, the circuit was made configurable to manage the situation, in which the foreword voltage drop of LED
exceeds the output voltage of the battery, without using a booster circuit. With these measures, a significant cost reduction wasmade feasible….
6. Paper No.(JSAE/SAE)
20159785 / 2015-32-0785
7. Paper title
A Shock Absorber Design with Position Sensitive Damper and its Performance Evaluation
8. Authors (Affiliation)
Girish Kokane, Nizar Ahamed, Ravindra Kharul (Endurance Technologies Pvt. Ltd)
9. Abstract
Ride comfort and handling present conflicting requirements on damping properties of a suspension system. While ride comfort
demands a softer damping, a higher damping force makes the ride handling better. Conventional dampers, being solely velocity
dependent, are always a compromise between these two requirements. A damper can be made position sensitive, in addition toits velocity depe order to obtain the best of both the worlds. A position sensitive damper can have a softer damping force for low
amplitude road excitations, as observed on highways and a higher damping force for higher amplitude road excitations, as
observed in off-road conditions. Thus such a damper can be optimized not only for a good comfort, but for a good handling
performance also. General designs for a position sensitive damper involve a bypass arrangement around the piston. This paper
discusses an alternate arrangement for achieving position sensitive damping and its benefits. Prototypes of the same have been
made and tested on a servo-hydraulic damper performance testing machine. Extensive analysis has been done to validate theposition dependency. Further the prototypes have been tested on a vehicle….
6. Paper No.(JSAE/SAE)
20159786 / 2015-32-0786
7. Paper title
Development of an Integrated Approach for Suspension Performance Evaluation
8. Authors (Affiliation)
Kishor Kothe, Nizar Ahamed, Girish Kokane, Ravindra Kharul (Endurance Technologies Pvt. Ltd)
9. Abstract
Vehicle suspension systems are designed keeping in mind the requirement for vehicle articulations and load transfer between
chassis & tires. Another factor which is given due importance is the avoidance of extremities with end cushions. As suchextremities result in generation of impact loads which could eventually lead to failure of end cushions and the vehicle chassis.
Number of occurrences of these extremities is an indication of how good a vehicle suspension design is. This paper presents amethodology developed that converts a shock absorber to a potential sensor that not only measures the travel and velocity, butalso the different kind of loads generated at different events. It includes instrumentation, data acquisition and its analysis forevaluating the performance of the shock absorber and also to provide additional insights into its design. Based on thesemeasurements, a virtual simulation model is built, validated and used for subsequent sensitivity study to optimize the damper
design.