CUMMINS MERCRUISER DIESELCharleston, SC 29405
Marine Performance Curves
Displacement:
Bore:
Stroke:Fuel System:
Cylinders:

Basic Engine Model:
QSB5.9-305 MCD
Engine Configuration:
D403075MX03[359 in3][4.02 in][4.72 in]

5.9 liter
102 mm
120 mmHPCR
6Advertised Power:

Curve Number:
M-91365
Date:
CPL Code
30-Oct-06
8464
kW [bhp, mhp] @ rpm
224 [300, 305] @ 2600

Aspiration: Turbocharged / Sea Water Aftercooled
Rating Type: Medium Continuous Duty

2600

2400

2200

2000

1800

1600

1400

1200

1000

800600Power (kW)Power (bhp)

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.
RATED POWER OUTPUT CURVE
300rpm
kWbhp
200
2600
224
300
250
175
2400
221
296
150
200
2200
222
297
125
2000
213
286
150
1800
200
268
100
1600
154
206
75
100
1400
110
147
50
50
1200
80
107
25
1000
58
77
00
800
4257
600
2939ENGINE SPEED - (rpm)

800
1000

Torque (N-m)

800

600

700

500

600
400

500
400

300

300

200Torque (ft-lb)

700

900

200
100

100

2600

2400

2200

2000

1800

1600

1400

1200

1000

080
0

6000

FULL LOAD TORQUE CURVE
rpm
N-m
ft-lb
2600
822
606
2400
879
648
2200
961
709
2000
1018
751
1800
1062
783
1600
918
677
1400
750
553
1200
633
467
1000
552
407
800
506
373
600
461
340

12.0

8.0

4.0

0

0

0

0

0

0

0

0

0

100

120

140

160

180

200

220

240

260

80
0

0.0

Fuel Consumption(gal/hr)

16.0

60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.00.0600

Fuel Consumption(l/hr)ENGINE SPEED - (rpm)

FUEL CONSUMPTION - PROP CURVErpm
l/hr
gal/hr
2600
57.3
15.1
2400
47.0
12.4
2200
37.9
10.0
2000
30.8
8.1
1800
22.7
6.0
1600
16.8
4.4
1400
11.9
3.1
1200
8.1
2.1
1000
5.4
1.4
800
3.8
1.0
600
2.7
0.7

ENGINE SPEED - (rpm)Rated Conditions: Ratings are based upon ISO 8665 and SAE J1228 reference conditions; air pressure of 100 kPa [29.612 in Hg], air temperature 25 deg. C [77 deg. F] and 30%
relative humidity. Power is in accordance 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 3046. 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. F0 having LHV of 42,780 kj/kg [18390 Btu/lb] and weighing 838.9 g/liter [7.001 lb/U.S. gal].
Medium Continuous Rating: This power rating is intended for continuous use in variable load applications where full power is limited to six (6) hours out of every twelve (12)hours of operation. Also, reduced power operations must be at or below 200 RPM of the maximum rated RPM. This is an ISO 3046 Fuel Stop Power Rating and is for applications
that operate 3,000 hours per year or less.

CHIEF ENGINEER

Marine Engine Performance Data
Curve No.: M-91365
DS-3075
DATE: 30Oct06
General Engine Data
Engine Model..............................................................................................................................
Rating Type ................................................................................................................................
Rated Engine Power.................................................................................................... kW [bhp]Rated Engine Speed............................................................................................................ rpm
Rated HP Production Tolerance ........................................................................................... ±%Rated Engine Torque..................................................................................................N•m [ft•lb]
Peak Engine Torque @ 1800 rpm ..............................................................................N•m [ft•lb]
Brake Mean Effective Pressure ....................................................................................kPa [psi]Indicated Mean Effective Pressure ...............................................................................kPa [psi]Minimum Idle Speed Setting................................................................................................ rpm
Normal Idle Speed Variation............................................................................................... ±rpm
High Idle Speed Range
Minimum ............................................................................. rpm
Maximum ............................................................................ rpm
Maximum Allowable Engine Speed ..................................................................................... rpm
Maximum Torque Capacity from Front of Crank2........................................................N•m [ft•lb]Compression Ratio .....................................................................................................................
Piston Speed ..........................................................................................................m/sec [ft/min]
Firing Order..................................................................................................................................
Weight (Dry) Engine only - Average...................................................................................kg [lb]Weight (Dry) Engine With Heat Exchanger System - Average...........................................kg [lb]Weight Tolerance (Dry) Engine only - Average..................................................................kg [lb]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

QSB5.9-305 MCD
Med. Cont. Duty224 [300]
2600
5822 [606]1062 [783]1755 [255]N/A
600
1026652685
2685
468 [345]
17.2:1
10.4 [2045]
1-5-3-6-2-4
N.A.
612 [1350]
N.A.

76
9776
98
77
10776
98

Fuel System1
Average Fuel Consumption – ISO 8178 E3Standard Test Cycle...............................l/hr [gal/hr]
Fuel Consumption @ 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 Fuel5 ................................................................kW [Btu/min]
Fuel Transfer Pump Pressure Range............................................................................kPa [psi]Fuel Rail Pressure
Gauge............................................................................kPa [psi]INSITE...........................................................................kPa [psi]38.7 [10.2]
57 [15]189 [50]
60 [140]132 [35]
66 [150]
2 [99]
76 [11]
N.A.
135,999 [19,725]

Air System1
Intake Manifold Pressure ...........................................................................................kPa [in Hg]
Intake Air Flow............................................................................................................ l/sec [cfm]Heat Rejection to Ambient ......................................................................................kW [Btu/min]Maximum Air Cleaner Inlet Temperature Rise Over Ambient...........................................°C [°F]

172 [51]278 [58]
32 [1810]
17 [30]Exhaust System1
Exhaust Gas Flow....................................................................................................... l/sec [cfm]Exhaust Gas Temperature
Turbine Out.......................................................................°C [°F]
Manifold ...........................................................................°C [°F]

600 [1272]
421 [789]
559 [1038]

TBD = To Be Decided

N/A = Not Applicable

N.A. = Not Available

1All Data at Rated Conditions
Consult Installation Direction Booklet for Limitations
Heat rejection 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.
2
3CUMMINS ENGINE COMPANY, INC.
COLUMBUS, INDIANAAll Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data:

http://www.cummins.com

Marine Engine Performance Data
Curve No.: M-91365
DS-3075
DATE: 30Oct06
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]

6.227 [4.644]
0.104 [0.078]
0.208 [0.155]
0.103 [0.077]

1Cooling System
Sea Water Aftercooled Engine (SWAC)
Sea Water Pump Specifications ..........................................................MAB 0.08.17-07/16/2001
Pressure Cap Rating (With Heat Exchanger Option) ....................................................kPa [psi]Standard Thermostat Operating Range Start to Open.....................................................°C [°F]
Full Open ..........................................................°C [°F]Engines with Single Loop Keel Cooling
Coolant Flow to Cooler (with blocked open thermostat)........................................ l/min [gal/min]
LTA Thermostat Operating Range
Start to Open.....................................................°C [°F]
Full Open ..........................................................°C [°F]3Heat Rejection to LTA Coolant …….......................................................................kW [Btu/min]Maximum LTA Coolant Return Temperature……………...................................................°C [°F]

TBD = To Be Decided

N/A = Not Applicable

103 [15]74 [165]
85 [185]
136 [36]
66 [150]80 [175]
183 [10420]
54 [130]

N.A. = Not Available

1All Data at Rated Conditions
2Consult Installation Direction Booklet for Limitations
3Heat rejection 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.
4Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable.
5May 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://www.cummins.com