CUMMINS INC.

Basic Engine Model

Columbus, IN 47201

KTA38-M2

Marine Performance Curves

Engine Configuration

CPL Code:

Date:

D233034MX02

2404

21-Sep-09

Displacement:
Bore:
Stroke:Fuel System:
Cylinders:

37.7 liter
159 mm
159 mmPT
12Rated Power:
Rated Speed:
Rating Type:Aspiration:[2301 in³]
[6.25 in][6.25 in]Curve Number:

M-62541119 kw[1500 bhp]
2050 rpm
Intermittent Duty
Turbocharged / Low Temperature Aftercooled

CERTIFIED: This diesel engine complies with or is certified to the following agencies requirements:
IMO - NOx requirements of the International Maritime Organization (IMO), MARPOL 73/78 Annex VI, Regulation 13*Propeller can be sized within or
above the speed range shown

2050

1600

2110

1500

1100

1400
1300

Full Throttle

900

1200

800

1100

Power (kw)

1000
700

Propeller Demand

900

600

800

500

700

Power (hp)

1000

600
400

500

300

400
300

200

200
100

10000
2300
2200
2100
2000
1900
1800
1700
1600
1500
1400
1300
1200
1100

0
10

90

00

Engine Speed - rpm
Speedrpm
2110
2050
1800
1500
1300
1100
900

Full Throttle- Powerkw
(hp)
1119
(1500)
1119(1500)
1012(1357)
859(1152)692(928)515(691)345(463)

Full Throttle- TorqueN·m(ft-lb)
5062(3734)
5210(3843)
5369(3960)
5469(4034)
5084(3750)
4474(3300)
3661(2700)

Fuel Cons.- Prop. Curve 3.0 Exp.
L/hr(gal/hr)
279.0
188.3
112.8
73.6
45.1
23.4

(73.7)(49.8)(29.8)(19.5)(11.9)(6.2)* Cummins Full Throttle Requirements:• Engine achieves or exceeds rated rpm at full throttle under any steady operating condition• Engines in variable displacement boats (such as pushboats, tugboats, net draggers, etc.) achieve no less than 100 rpm below
rated speed at full throttle during a dead push or bollard pull
• Engine achieves or exceeds rated rpm when accelerating from idle to full throttle
Rated Conditions: Ratings are based upon ISO 15550 reference conditions; air pressure of 100 kPa [29.612 in Hg], air temperature 25deg. C [77 deg. F] and 30% relative humidy. Power is inaccordance with IMCI procedure. Member NMMA. Unless otherwise specified, tolerance on all values is +/-5%.
Full Throttle curve represents power at the crankshaft for mature gross engine performance corrected in accordance with ISO 15550. Propeller Curve represents approximate power demand
from a typical propeller. Propeller Shaft Power is approximately 3% less than rated crankshaft power after typical reverse/reduction gear losses and may vary depending on the type of gear or
propulsion system used.
Fuel Consumption is based on fuel of 35 deg. API gravity at 16 deg C [60 deg. F] having LHV of 42,780 kj/kg [18390 Btu/lb] and weighing 838.9 g/liter [7.001 lb/U.S. gal].
Intermittent Duty (INT): Intended for intermittent use in variable load applications where full power is limited to two hours out of every eight hours ofoperation. Also, reduced power operations must be at or below 200 rpm of the maximum rated rpm. This rating is an ISO 15550 fuel stop power
rating and is for applications that operate less than 1,500 hours per year.
CHIEF ENGINEER

Propulsion Marine Engine Performance Data
Curve No.
DS :
CPL :
DATE:

M-62544983
2404
21-Sep-09

General Engine Data
KTA38-M2
Engine Model ……….…………...…...……………………..…………………………………………………………
Intermittent Duty
Rating Type …………………….……..………………………………………………………………………………
Rated Engine Power …….…..……………………………..………………........….…..………………....kW [hp]1119 [1500]
Rated Engine Speed ………………..….………….....……………….........…….......……………..…………rpm
2050
Rated Power Production Tolerance ……....…..………………….………………………..…....….…..….......±%
3
Rated Engine Torque ……………...…………..……….…………………...…………......…....…........N·m [lb·ft]
5210 [3843]
Peak Engine Torque @ 1500 rpm………………………..…………………………………....….…......N·m [lb·ft]
5469 [4034]
Brake Mean Effective Pressure ..……….…...….….…………………...……………..........…...….…..kPa [psi]1736 [252]Indicated Mean Effective Pressure…...………..……………………………………….........…...….…..kPa [psi]N.A. [N.A.]
Maximum Allowable Engine Speed ..…….…….….….………………...……………........………….....……rpm
2375
Maximum Torque Capacity from Front of Crank² ..…..……………………………......…....…..........N·m [lb·ft]
4341 [3202]
Compression Ratio ….…….……………………………......…………………………….…………………...………
13.9:1
Piston Speed ……......……………...…...……….….…………………...……………..……..….....m/sec [ft/min]
10.8 [2135]
Firing Order ……..…………………….……........………..…....……...…………………….….……………....…… 1R-6L-5R-2L-3R-4L-6R-1L2R-5L-4R-3L
Weight (Dry) - Engine Only - Average …....……..….……..………………...……………......…...…..…..kg [lb]4218 [9300]
Weight (Dry) - Engine With Heat Exchanger System - Average….……….………...
....….……….....…..kg [lb]4538 [10005]
Weight Tolerance (Dry) Engine Only ...….. ……....….……………...……..………...…...…....3xStd Dev( ±%)10.5
Governor Settings
Default Droop Value…………………………….
……………..Refer to MAB 2.04.00-03/23/2006 for Droop explanation
6%
N/A
Minimum Droop Allowed………………………………………………………………………………………………
N/AMaximum Droop Allowed………………………………………………………………………………………………
High Speed Governor Break Point…………………………………………..
....……….…..……………………..rpm
2110
Minimum Idle Speed Setting ...…….…….…….….…………………...……………........……….…..………rpm
650
Normal Idle Speed Variation .…........................…………….….………………….......…………….………±rpm
252110High Idle Speed Range Minimum ..................................................................................………....……rpm
Maximum ...............................................................................……..........……rpm
2296
Noise and Vibration
Average Noise Level - Top
Average Noise Level - Right Side
Average Noise Level - Left Side
Average Noise Level - Front(Idle).. ………………..…...………….……....dBA @ 1m(Rated) ......………………….....………….…dBA @ 1m(Idle).. ………………..…...………….……....dBA @ 1m(Rated) ......………………….....………….…dBA @ 1m(Idle).. ………………..…...………….……....dBA @ 1m(Rated) ......………………….....………….…dBA @ 1m(Idle).. ………………..…...………….……....dBA @ 1m(Rated) ......………………….....………….…dBA @ 1m

Fuel System¹Avg. Fuel Consumption - ISO 8178 E3 Standard Test Cycle ….........…..………….…....….…….l/hr [gal/hr]
Fuel Consumption at Rated Speed ………..………..……………………………………......…….….l/hr [gal/hr]
Approximate Fuel Flow to Pump ..…..…..……..….…….……………………………..….....…....….l/hr [gal/hr]
Maximum Allowable Fuel Supply to Pump Temperature ..…..…..……...…………... .…...…........…...°C [°F]
Approximate Fuel Flow Return to Tank .….….....………………………….…………......….…...….l/hr [gal/hr]
Approximate Fuel Return to Tank Temperature ……….…………....….….…………...….……..……...°C [°F]
Maximum Heat Rejection to Drain Fuel ……..…...………………………...………….…........…...kW [Btu/min]
Fuel Transfer Pump Pressure Range…...…...…………………………………………..............……..kPa [psi].................……..kPa [psi]Fuel Pressure - Pump Out/Rail …Mechanical Gauge …...........................................
INSITE Reading .................................................................……..kPa [psi]TBD= To Be Determined

N/A = Not Applicable

N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
197.6 [52.2]
279.0 [73.7]
469.4 [124.0]
60.0 [140]190.4 [50.3]
68.4 [155]
2.8 [157]
N.A.
1310 [190]1338 [194]N.A. = Not Available¹ Unless otherwise specified, all data is at rated power conditions and can vary ± 5%.
² No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drive
system. Consult Installation Direction Booklet for Limitations.

³ Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler,a service fouling factor should be applied according to the cooler manufacturer's recommendation.
4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable.
5 May not be at rated load and speed. Maximum heat rejection may occur at other than rated conditions.

CUMMINS ENGINE COMPANY, INC
COLUMBUS, INDIANAAll Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data:

http://marine.cummins.com/

Propulsion Marine Engine Performance DataCurve No.
DS :
CPL :
DATE:

M-62544983
2404
21-Sep-09

Air System¹
Intake Manifold Pressure ..….……..………………….…………..….…………………….................kPa [in Hg]
Intake Air Flow .…….....….…...…….…….…...…...………….……..…………………….....….…..…l/sec [cfm]Heat Rejection to Ambient ….…..………..……..……………………………………..........…........kW [Btu/min]

183 [54]
1638 [3471]
80 [4561]

Exhaust System¹
Exhaust Gas Flow …….….....…...…….........……...………..……..………………….......….........….l/sec [cfm]Exhaust Gas Temperature (Turbine Out) ….....................……………………...….........................…...°C [°F]
Exhaust Gas Temperature (Manifold) …...................……….………………............……………….......°C [°F]3713 [7867]
455 [850]
N.A.

Emissions (in accordance with ISO 8178 Cycle E3)
NOx (Oxides of Nitrogen) …….…...…………………….........…..….….......…………….........g/kw·hr [g/hp·hr]
HC (Hydrocarbons) …….…...………………………....…….....……………...…......................g/kw·hr [g/hp·hr]
CO (Carbon Monoxide) ...…....………..………...…...………………………...........................g/kw·hr [g/hp·hr]
PM (Particulate Matter) …...………...…………………………………………..........................g/kw·hr [g/hp·hr]

9.49 [7.08]
0.15 [0.11]
0.31 [0.23]
N.A.

Cooling System¹
Sea Water Pump Specifications …….…....................….…..................…………....MAB 0.08.17-07/16/2001
Pressure Cap Rating (With Heat Exchanger Option) …................…..........…......................…..…..kPa [psi]Max. Pressure Drop Across Any External Cooling System Circuit …………………………………
..........…..…..kPa [psi]103 [15]34 [5]Engines with Low Temperature Aftercooling (LTA )Two Loop LTA
Main Engine Circuit
Coolant Flow to Main Cooler (with blocked open thermostat)……...………..….......................l/min [gal/min]Start to open………………..........…………..…..…....°C [°F]Standard Thermostat Operating Range
Full open……………….…..........……………...……...°C [°F]
Heat Rejection to Engine Coolant³ ….…….……….….…...….………..................................…..kW [Btu/min]
Aftercooler (LTA) Circuit
Coolant Flow to LTA Cooler (with blocked open thermostat)…………………….......................l/min [gal/min]Start to open………………..........…………..…..…....°C [°F]
LTA Thermostat Operating Range
Full open…………………...........……………...……...°C [°F]
Heat Rejection to Engine Coolant³ ….…...….……….….…….………..................................…..kW [Btu/min]Maximum Coolant Inlet Temperature from LTA Cooler…..………………….........…...................…….°C [°F]

TBD= To Be Determined

N/A = Not Applicable

1117 [295]82 [180]
95 [202]514 [29229]
329 [87]
66 [150]80 [175]
208 [11828]
71 [160]

N.A. = Not Available¹ Unless otherwise specified, all data is at rated power conditions and can vary ± 5%.
² No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drivesystem. Consult Installation Direction Booklet for Limitations.

³ Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler,a service fouling factor should be applied according to the cooler manufacturer's recommendation.
4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable.
5 May not be at rated load and speed. Maximum heat rejection may occur at other than rated conditions.

CUMMINS ENGINE COMPANY, INC
COLUMBUS, INDIANAAll Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data:

http://marine.cummins.com/