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Marine

Pg. No

N93

CUMMINS ENGINE COMPANY, INCColumbus, Indiana 47201

Marine Performance Curve

Curve Number:

Basic Engine Model:

Engine Configuration: CPL Code: Date:

Rating Conditions: Ratings are based upon ISO 8665 reference conditions; air pressure of 100 kPa [29.612 in. Hg] air temperature 25C [77F] and 30%

relative humidity. Power is rated in accordance with IMCI procedures.

Fuel consumption is based on fuel of 35API gravity at 16C (60F) 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. Brake 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 (3.0 exponent)

Continuous Rating: This power rating is intended for continuous use in applications requiring uninterrupted service at full power. This rating is an ISO

3046 Standard Power Rating.

CHIEF ENGINEER

Displacement: 14.0 litre [855 in.3] Aspiration: Turbocharged/AftercooledBore: 139 mm [5.50 in.]Stroke: 152 mm [6.00 In.] kW [HP] @ RPMFuel System: PT Advertised Power 261 [350] @ 1800Cylinders: 6

D093348MX02 0700 12May99

M-1399NTA855-M

Continuous Rating

261 kW[350 HP]

66.4 LPH[17.6 GPH]

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*All Data at Rated Conditions

**Consult Installation Direction Booklet for Limitations

***Heat rejection to coolant values are based on 50% water/ 50% ethylene glycol mix and do not include fouling factors. Cooler sizing should

be based on the above heat values factored by an amount for service fouling typical of the cooler design applied.

****Consult option notes for flow specifications of optional Cummins seawater pumps.

CUMMINS ENGINE COMPANY, INC.COLUMBUS, INDIANA

All 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

Marine

Pg. No.

N94 Curve No. M-1399

DS-4962

CPL: 0700

DATE: 12May99

General Engine Data*

Engine Model............................................................................................................... NT855-MRating Type ................................................................................................................. ContinuousRated Engine Power...................................................................................... kW [HP] 261 [350]Rated Engine Speed .......................................................................................... RPM 1800High Idle Speed Range ..................................................................................... RPM 1962 - 2106Idle Speed Range............................................................................................... RPM 575 - 675Engine Torque ............................................................................................ Nm [ft/lb] 1384 [1021]Brake Mean Effective Pressure ................................................................... kPa [PSI] 1241 [180]Compression Ratio ...................................................................................................... 14.5:1Piston Speed ....................................................................................... m/sec [ft/min.] 9.1 [1800]Maximum Torque Capacity from Front of Crank**Firing Order ................................................................................................................. 1-5-3-6-2-4

Fuel System*

Fuel Consumption ................................................................................. litre/hr [GPH] 66.4 [17.6]

Approximate Fuel Flow to Pump .......................................................... litre/hr [GPH] 211 [56]Fuel Rail Pressure Range ........................................................................... kPa [PSI] 1116 [162]

Weight (Dry)

Engine Only ...................................................................................................... kg [lb] 1303 [2870]With Heat Exchanger Cooling System ............................................................ kg [lb] +127 [280]

Air System*

Intake Manifold Pressure.................................................................... mm Hg [in. Hg] 940 [37]Intake Air Flow .................................................................................... litre/sec [CFM] 380 [800]Heat Rejection to Ambient .................................................................. kW [BTU/min.] 33 [1900]Minimum Ambient Temperature for Cold Start (No Aids) ............................... C [F] 0 [32]

Exhaust System*

Exhaust Gas Flow (after turbine) ........................................................litre/sec [CFM] 880 [1850]

Exhaust Gas Temperature (after turbine) ...................................................... C [F] 427 [800]Cooling System*

Heat Rejection to Engine Coolant*** .................................................. kW [BTU/min.] 220 [12,500]Engine Water Flow ............................................................................ litre/min. [GPM] 427 [113]Raw Water Flow ............................................................................... litre/min. [GPM] 234 [62]Pressure Cap Rating w/Heat Exchanger .....................................................kPa [PSI] 103 [15]

INSTALLATION DIAGRAMS: .......................................................................................... 3383880