CUMMINS ENGINE COMPANY, INC
Columbus, Indiana 47201

Marine Performance Curve

Displacement:
Bore:
Stroke:Fuel System:
Cylinders:

3.9 litre[239 in.3]
102 mm
[4.02 in.]
119 mm[4.72]
Rotary, CAV- DPA
4Basic Engine Model:

4BT3.9-M

Curve Number:

M-90196

Engine Configuration:

CPL Code:

Date:

D382013MX02

0741

12May99

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Aspiration: Turbocharged
Advertised PowerkW [HP] @ RPM
112 [150] @ 2800

Intermittent Rating

112 kW[150 HP]

28.8 LPH[7.6 GPH]

Rating Conditions: Ratings are based upon ISO 8665 reference conditions; air pressure of 100 kPa [29.612 in. Hg] air temperature 25°C [77°F] and 30%
relative humidity. Power is rated in accordance with IMCI procedures.
Fuel consumption is based on fuel of 35° API gravity at 16°C (60°F) having LHV of 42,780 kj/kg (18,390 Btu/lb) and weighing 838.9 g/liter (7.001 lb/U.S.
gal).
Propeller Shaft Power represents the net power available after typical reverse/reduction gear losses and is 97% of rated power.
1. Rated Power kW / (HP)

4. Fuel Consumption for Brake and Shaft power.

2. Shaft power kW / (HP) with Reverse / Reduction Gear

5. Fuel Consumption for Typical Propeller.

3. Typical Propeller Power Curve (2.7 exponent)Intermittent Rating: This power rating is intended for Intermittent use in variable load application where full power is limited to two (2) hours out of every
eight (8) hours of operation. Also, reduced power operation must be at or below 200 RPM of the maximum rated RPM. This rating is an ISO 3046 fuelstop power rating and is for applications that operate less than 1500 hours per year.
CHIEF ENGINEER

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Marine Engine Performance Data
Curve No. M-90196
DS-4959
CPL: 0741
DATE: 12May99

General Engine Data*
Engine Model...............................................................................................................
Rating Type .................................................................................................................
Rated Engine Power.......................................................................................kW [HP]
Rated Engine Speed ........................................................................................... RPM
High Idle Speed Range ....................................................................................... RPM
Idle Speed Range................................................................................................ RPM
Engine Torque ...............................................................................................Nm [ft/lb]
Brake Mean Effective Pressure .................................................................... kPa [PSI]
Compression Ratio ............................................................................................ 16.5:1
Piston Speed ..........................................................................................m/sec [ft/min]Maximum Torque Capacity from Front of Crank**
Firing Order .................................................................................................................

4BT3.9-M
Intermittent
112 [150]
2800
2968-3080
700-900
381 [281]
1222 [177]11.2 [2205]
1-3-4-2

Fuel System*
Fuel Consumption .................................................................................. litre/hr [GPH]Approximate Fuel Flow to Pump ............................................................ litre/hr [GPH]
Fuel Transfer Pump Pressure Range........................................................... kPa [PSI]

28.8 [7.6]37 [10]3.5-69 [.5-10]

Weight (Dry)Engine Only ....................................................................................................... kg [lb]With Heat Exchanger Cooling System .............................................................. kg [lb]390 [860]+33 [72]

Air System*
Intake Manifold Pressure...................................................................... mm Hg [in Hg]
Intake Air Flow......................................................................................litre/sec [CFM]
Heat Rejection to Ambient.....................................................................kW [BTU/min]
Minimum Ambient Temperature for Cold Start (No Aids) ................................. °C[°F]

711 [28]130 [270]
14 [800]
0 [32]

Exhaust System*
Exhaust Gas Flow (after turbine) ........................................................litre/sec [CFM]
Exhaust Gas Temperature (after turbine) ....................................................... °C [°F]

320 [700]482 [900]

Cooling System*
Heat Rejection to Coolant......................................................................kW [BTU/min]Engine Water Flow .............................................................................. litre/min [GPM]
Raw Water Flow .................................................................................. litre/min [GPM]
Pressure Cap Rating w/Heat Exchanger...................................................... kPa [PSI]

95 [5400]
189 [50]
87 [23]103 [15]INSTALLATION DIAGRAMS:
With Borg Warner 71C Marine Gear ...........................................................................

*All Data at Rated Conditions**Consult Installation Direction Booklet for Limitations

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

3884427-A