CAT C7 Specification Sheets

® C7MARINE PROPULSION

320 mhp (315bhp) 235 bkW

Image shown may not reflectactual Engine

SPECIFICATIONSI-6, 4-Stroke-Cycle-DieselEmissions...................................................................... IMODisplacement............................................. 7.2 L (442 cu in)Rated Engine Speed....................................................2400Bore.......................................................... 110 mm (4.33 in)Stroke......................................................... 127 mm (5.0 in)Aspiration................................... Turbocharged-AftercooledGovernor.............................................................. ElectronicCooling System.......................................... Heat ExchangerWeight, Net Dry (approx.)........................ 799 kg (1760 lbs)Refill Capacity

Cooling System..............................39 L (10.3 U.S. gal)Lube Oil System.............................. 25 L (6.6 U.S. gal)

Oil Change Interval.................................................. 200 hrsCaterpillar Diesel Engine Oil 10W30 or 15W40

Rotation (from flywheel end)....................CounterclockwiseFlywheel and Flywheel Housing.........................SAE. No. 3Flywheel Teeth...............................................................126

STANDARD ENGINE EQUIPMENT

Air Inlet SystemSea water aftercooler, 12-volt air inlet heater, air cleanerwith fumes disposal (closed system)Charging System12V 51 amp belt driven charging alternator andmountingCooling SystemGear driven auxiliary sea water pump, belt drivencentrifugal jacket water pump, auxiliary sea water lines,expansion tank, transmission oil cooler, engine-mountedheat exchanger with removable tube bundle andreplaceable copper-nickel tubes, block heater,thermostat and housingExhaust SystemWatercooled exhaust manifold and turbocharger, fumesdisposal routed to turbocharger inletFuel SystemHydrdaulic Electronic Unit Injection (HEUI), fuel transferpump, fuel priming pump, fuel filter - RH or LH service

Lube SystemCrankcase breather, oil filter - front center service, oillevel gauge - RH or LH service, oil filler - RH or LHservice, oil pan drain - RH or LH service, gear drivenengine oil pumpMounting SystemFront mount is included and provides a mounting surfaceof 1 mm (.04 in) below the centerline of the engineFront mount is not included (Do not use shipping mountsin permanent installation.)Protection SystemElectronic overspeed shutoff

Starting System12V rear facing electric starting motorGeneralVibration damper and guard, Caterpillar yellow paint,lifting eyesISO CertificationFactory-designed systems built at CaterpillarISO 9001:2000 certified facilities

1 17 September 2009 5:57 AM

® C7 MARINE PROPULSION320 mhp (315 bhp) 235 bkW

PERFORMANCE CURVES

C-RATING - DM7588-01

Engine Power kW

Engine Torque N•m

BSFC g/kW-hr

Engine Speed rpm

Metric

Maximum Power

Prop Demand- - - - - - -

Maximum Power DataEngine

Speed rpmEngine

Power kWEngine

Torque N·mBSFC

g/kW-hrFuel Rate

L/hr

2400 235 934 229.9 64.42200 235 1019 222.1 62.22000 235 1121 217.4 60.81800 235 1246 216.4 60.61600 204 1220 220.1 53.61400 169 1150 228.5 45.91200 131 1044 242.4 37.91000 95 906 262.8 29.7

Prop Demand DataEngine

Speed rpmEngine

Power kWEngine

Torque N·mBSFC

g/kW-hrFuel Rate

L/hr

2400 235 935 230 64.42200 181 786 219.4 47.32000 136 649 218.2 35.41800 99.1 526 223.2 26.41600 69.6 416 231.2 19.21400 46.6 318 241.4 13.41200 29.4 234 255.2 8.91000 17 162 273.3 5.5

NOTE: Prop demand data is a cubic prop demand curve with 3.0exponent for displacement hulls only.



DIMENSIONS

Right Side Front

Engine Dimensions

(1) Length to Flywheel Housing 1170.8 mm 46.09 in

(2) Width 942.8 mm 37.12 in

(3) Height 916.9 mm 36.1 in

Weight, Net Dry (approx) 799 kg 1,761 lb

Note: Do not use for installation design. See generaldimension drawings for detail (Drawing # 2519637 ).



RATING DEFINITIONS AND CONDITIONS

C Rating (Maximum Continuous) -% Load Factor: 20 to 80% Time at Rated RPM: up to 50Typical Time at Full Load: 6 hours out of 12Typical Hour/Year: 2000 to 4000Typical Applications: For vessels operating at rated loadand rated speed up to 50% of the time with cyclical loadand speed (20% to 80% load factor). Typicalapplications could include but are not limited to vesselssuch as ferries, harbor tugs, fishing boats, offshoreservice boats, displacement hull yachts, or short tripcostal freighters. Typical operation ranges from 2000 to4000 hours per year.

Powerat declared engine speed is in accordance withISO3046-1:2002E. Caterpillar maintainsISO9001:1994/QS-9000 approved engine test facilitiesto assure calibration of test equipment. Electronicallycontrolled engines are set at the factory at theadvertised power corrected to standard ambientconditions. The published fuel consumption rates are inaccordance with ISO3046-1:2002E.Fuel ratesare based on fuel oil of 35º API [16ºC (60ºF)] gravityhaving an LHV of 42 780 kJ/kg (18,390 Btu/lb) whenused at 29ºC (85ºF) and weighing 838.9 g/L (7.001lb/U.S. gal). Additional ratings may be available forspecific customer requirements. Consult your Caterpillarrepresentative for additional information.

Performance data is calculated in accordance with tolerances and conditions stated in this specification sheet and isonly intended for purposes of comparison with other manufacturer's engines. Actual engine performance may varyaccording to the particular application of the engine and operating conditions beyond Caterpillar's control.

Power produced at the flywheel will be within standard tolerances up to 49º C (120º F) combustion air temperaturemeasured at the air cleaner inlet, and fuel temperature up to 52º C (125ºF) measured at the fuel filter base. Powerrated in accordance with NMMA procedure as crankshaft power. Reduce crankshaft power by 3% for propeller shaftpower.

Performance No.: DM7588-01

Feature Code: C07MC07

U.S. Sourced

15186757

17 September 2009

©2009 Caterpillar

All rights reserved.

Materials and specifications are subject to change without notice.

The International System of Units (SI) is used in this publication.

CAT, CATERPILLAR, SAFETY.CAT.COM their respective logos, "Caterpillar Yellow," and thePOWER EDGE trade dress, as well as corporate and product identity used herein, are

trademarks of Caterpillar and may not be used without permission.

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CAT C7 Specification Sheets