CUMMINS MERCRUISER DIESEL

Basic Engine Model

Curve Number:Charleston, SC 29405

QSD4.2-320 LC

BC9163, BC 9164

Marine Performance Curves

Engine Configuration

D913003MX03
Displacement:
Bore:
Stroke:Fuel System:
Cylinders:

4.2 liter
254 in³
94 mm
3.70 in
100 mm
3.94 inBosch Common Rail (CRS 2.0)
6CPL Code:

Date:

7-Jul-09

kW [bhp, mhp] @ rpm
Advertised Power: 235 [315, 320] @ 3800
Aspiration: Turbocharged/Sea Water Aftercooled
Rating Type: Light Commercial Duty

CERTIFIED: This marine diesel engine is certified to the model year requirements of EPA Marine Tier 2 per 40 CFR 94 and conforms with theNOx requirements of the International Maritime Organization (IMO), MARPOL 73/78 Annex VI, Regulation 13 as applicable.
320225

Power (kw)

175

240

150

200

125

160

100

120

75

80

50

3800

3400

3000

2600

2200

0

1800

400

1400

251000Power (hp)

280

200

Engine Speed - rpm
700

500

600

300

400
300

200

Torque (ft-lb)

Torque (Nm)

400
500

200
100

100

3800

3400

3000

2600

2200

1800

0

1400

1000

0

15.0

4.0

0.0

0.0

Engine Speed - rpm

Fuel Consumption(gal/hr)

8.0

3800

30.0

3400

12.03000

45.0

2600

16.0

2200

60.0

1800

20.0

1400

75.0

1000

Fuel Consumption(l/hr)Engine Speed - rpm

RATED POWER OUTPUT CURVErpm
kw
bhp
3800
235
315
3600
232
311
3400
227
305
3200
220
295
3000
213
285
2800
203
272
2600
192
257
2200
142
190
1800
93
125
1400
56
76
1200
4459
1000
3243
FULL LOAD TORQUE CURVErpm
N-mft-lb
3800
591
436
3600
616
454
3400
638
471
3200
657
485
3000
676
499
2800
693
511
2600
703
519
2200
615
454
1800
493
364
1400
385
284
1200
348
257
1000
305
225
FUEL CONSUMPTION - PROP CURVErpml/hr
gal/hr
3800
71.9
19.0
3600
56.7
15.0
3400
48.1
12.7
3200
39.0
10.3
3000
32.3
8.5
2800
26.4
7.0
2600
22.0
5.8
2200
14.1
3.7
1800
8.1
2.1
1400
5.0
1.3
1200
3.8
1.0
1000
1.8
0.5

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.
Rated Curves (upper) represents rated power at the crankshaft for mature gross engine performance capabilities obtained and corrected in accordance with ISO 15550. Propeller Curve(lower) is based on a typical fixed propeller demand curve using a 2.7 exponent. 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].
Light Duty Commercial (LD) Intended for use in variable load applications where full power is limited to one (1) hour out of every eight (8) hours of operation. Also, reduced power must be ator below 400 rpm of the maximum rated rpm. This power rating is for revenue generating or some government service propulsion applications that operate 500 hours per year or less.

CHIEF ENGINEER

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

BC9163, BC 9164
D91-MX-1
7-Jul-09

General Engine Data
QSD4.2-320 LCEngine Model ……….…………...…...……………………..…………………………………………………………
Rating Type …………………….……..………………………………………………………………………………… Light Commercial Duty
235 [315]
Rated Engine Power …….…..……………………………..………………........….…..………………....kW [hp]3800
Rated Engine Speed ………………..….………….....……………….........…….......……………..…………rpm
5
Rated Power Production Tolerance ……....…..………………….………………………..…....….…..….......±%
591 [436]
Rated Engine Torque ……………...…………..……….…………………...…………......…....…........N·m [lb·ft]
703 [519]
Peak Engine Torque @ 2600 rpm ……....……....…...…………………...…………......……...…......N·m [lb·ft]
1784 [259]Brake Mean Effective Pressure ..……….…...….….…………………...……………..........…...….…..kPa [psi]1784 [259]
Indicated Mean Effective Pressure…...………..……………………………………….........…...….…..kPa [psi]600
Minimum Idle Speed Setting ...…….…….…….….…………………...……………........……….…..………rpm
25
Normal Idle Speed Variation .…........................…………….….…………………... ....…………….………rpm
3880
High Idle Speed Range Minimum ..................................................................................………....……rpm
3920
Maximum ...............................................................................……..........……rpm
3900
Maximum Allowable Engine Speed ..…….…….….….………………...……………........………….....……rpm
17.5:1
Compression Ratio ….…….……………………………......……………………….…………………...……………
12.7 [2493]Piston Speed ……......……………...…...……….….…………………...……………..……..….....m/sec [ft/min]
Firing Order ……..…………………….……........………..…....……...…………………….….……………....……
1-5-3-6-2-4
Weight (Dry) - Engine With Heat Exchanger System - Average….……….………...
....….……….....…..kg [lb]460 [1014]

Fuel System¹
Avg. Fuel Consumption - ISO 8178 E3 Standard Test Cycle ….........…..………….…....….…….l/hr [gal/hr]
Fuel Consumption at Rated Speed ………..………..……………………………………......…….….l/hr [gal/hr]
Maximum Allowable Fuel Supply to Pump Temperature ..…..…..……...…………....…...…........…....°C [°F]….………...……...……….....°C [°F]
Approximate Fuel Return to Tank TemperatureWith Cooler……….

48.3 [13]71.9 [19]60.0 [140]41.1 [106]

Air System¹
Intake Manifold Pressure ..….……..………………….…………..….…………………….................kPa [in Hg]
Intake Air Flow .…….....….…...…….…….…...…...………….……..…………………….....….…..…l/sec [cfm]

190 [56]
310 [657]

Exhaust System¹
Exhaust Gas Flow …….….....…...…….........……...………..……..………………….......….........….l/sec [cfm]Exhaust Gas Temperature (Turbine Out) ….....................……………………...….........................…...°C [°F]
Exhaust Gas Temperature (Manifold) …...................……….………………............……………….......°C [°F]

724 [1534]
545 [1013]
628 [1161]

Emissions (ISO 8178 Cycle E3- for Traditional Propulsion Applications)
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]
Cooling System¹
Sea Water Pump Specifications …….…....................….…..................…………....MAB 0.08.17-07/16/2001
Pressure Cap Rating (With Heat Exchanger Option) …................…..........…......................…..…..kPa [psi]6.35 [4.74]
0.16 [0.12]
0.74 [0.55]
0.22 [0.16]

103 [15]

Engines without Low Temperature Aftercooling (LTA )Sea Water Aftercooled Engine (SWAC)
Standard Thermostat Operating Range (Start to Open) …….…..….………...........….………....……..°C [°F]Standard Thermostat Operating Range (Full Open) …….....……......…..…...........….....................….°C [°F]

TBD= To Be Determined

N/A = Not Applicable80 [176]
95 [202]

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