Caterpillar C15 Engine Specs

56.6 in.1437.8 mm

41.0 in.1041.3 mm

32.9 in.836.1 mm

17.9 in.454.8 mm

CATERPILLAR® ENGINE SPECIFICATIONSIn-line 6-Cylinder, 4-Stroke-Cycle DieselBore — in (mm) . . . . . . . . . . . . . . . . . . . . . 5.4 (137) Stroke — in (mm) . . . . . . . . . . . . . . . . . . 6.75 (171) Displacement — cu in (L) . . . . . . . . . . . 928 (15.2) Aspiration. . . . . . . . . . . . . . . Series Turbocharged Compression Ratio . . . . . . . . . . . . . . . . . . . . . 18.0:1 Rotation (from flywheel end) . . CounterclockwiseCooling System1 — gal (L) . . . . . . . . . . . 6.4 (24.4) Lube Oil System (refill) — gal (L) . . . . . 10.0 (38) Weight, Net Dry (approx) — lb (kg)

with standard equipment . . . . . . . . 3090 (1402) 1 Engine only. Capacity will vary with radiator size and use of cab heater.

STANDARD EQUIPMENTCaterpillar® Regeneration SystemCooling: gear-driven water pump, oil coolerDiesel particulate filter Electronic Control Module (ECM)Electronic Data Link, ATA/SAEElectronically controlled unit injection fuel

systemFan drive mounting bracketFuel — spin-on secondary filter, transfer pumpGear-driven jacket water pumpGovernor — full-range electronically controlledLifting eyesLubrication: gear-driven pump, front or rear

sump pan, full flow spin-on filter, oil filler, oillevel gauge (dipstick)

Open crankcase ventilationPad mount air conditioner compressorPad mount alternatorSAE No. 1 flywheel housingSeries TurbochargersVibration damper

ACCESSORY EQUIPMENTAir compressors — 16.1 cfm (0.46 m3/min) or

31.6 cfm (0.9 m3/min)Air inlet elbowsAlternator (12 Volt-115 Amp)ATAAC inlet elbowAutomatic transmission adapterAuxiliary pulleys and drivesCat compression brakeExhaust couplingsFan drive mounting bracketFlywheelFront engine supportFuel priming pumpOptional turbocharger mounting locations Primary fuel filter (10 micron)Sound suppression panels — blockStarting motor: 12V or 24V

LEHT4565-10 Page 1 of 7

Shown withOptional Equipment

On-HighwayDiesel Engine with ACERT®

Technology

C15EPA 07 Certified

435-625 hp @ 2100 rpm1550-2050 lb-ft @

1200 rpm Peak Torque

DIMENSIONS


C15 ON-HIGHWAY DIESEL ENGINE — 435 hp

PERFORMANCE DATAOperating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 435 (324)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 450 (336)Peak Torque — lb-ft (N•m) . . . . . . . . . 1550 (2102)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

Operating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100Advertised hp (kW) . . . . . . . . . . . . . . . . . . 435 (324)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 450 (336) Peak Torque — lb-ft (N•m) . . . . . . . . . 1650 (2238)Peak Torque — rpm . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Altitude Capability — ft (m). . . . . . . 10,000 (3048)

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

435 hp (324 kW)

300

350

To

rqu

elb

-ft

Po

wer

bh

p

950

500

550

1100

1550

1700

1850

1250

1400

400

450

PERFORMANCE CURVES

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

435 hp (324 kW)

300

350

To

rqu

elb

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Po

wer

bh

p

950

500

550

1100

1550

1700

1850

1250

1400

400

450

PERFORMANCE DATAOperating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 435 (324)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 450 (336)Peak Torque — lb-ft (N•m). . 1550/1650 (2102/2238)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . 43/52 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

Operating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 435 (324)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 450 (336)Peak Torque — lb-ft (N•m). . 1550/1750 (2102/2373)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . 43/61 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

PERFORMANCE CURVES

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

435 hp MT (324 kW)

300

350

Torq

ue

lb-f

tP

ow

erb

hp

1000

500

550

1200

1800

2000

2200

1400

1600

400

450

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

435 hp MT (324 kW)

300

350

To

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550

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1850

1250

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C15 ON-HIGHWAY DIESEL ENGINE — 475 hp

PERFORMANCE DATAOperating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 475 (354)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 490 (365)Peak Torque — lb-ft (N•m) . . . . . . . . . 1650 (2238)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

Operating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 475 (354)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 490 (365) Peak Torque — lb-ft (N•m). . . . . . . . . . . . 1850 (2509)Peak Torque — rpm . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Altitude Capability — ft (m). . . . . . . 10,000 (3048)

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

475 hp (354 kW)

300

350

To

rqu

elb

-ft

Po

wer

bh

p

950

500

550

1100

1550

1700

1850

1250

1400

400

450

PERFORMANCE CURVES

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

475 hp (354 kW)

300

350

Torq

ue

lb-f

tP

ow

erb

hp

950

500

550

1100

1550

1700

1850

1250

1400

400

450

PERFORMANCE DATAOperating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 475 (354)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 490 (365) Peak Torque — lb-ft (N•m). . 1650/1750 (2238/2373)Peak Torque — rpm . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . 39/47Altitude Capability — ft (m). . . . . . . 10,000 (3048)

Operating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 475 (354)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 490 (365)Peak Torque — lb-ft (N•m). . 1650/1850 (2238/2508)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . 39/56 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

475 hp MT (354 kW)

300

350

Torq

ue

lb-f

tP

ow

erb

hp

950

500

550

1100

1550

1700

1850

1250

1400

400

450

PERFORMANCE CURVES

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

475 hp MT (354 kW)

300

350

To

rqu

elb

-ft

Po

wer

bh

p

950

500

550

1100

1550

1700

1850

1250

1400

400

450


C15 ON-HIGHWAY DIESEL ENGINE — 435 to 600 hp

PERFORMANCE DATAOperating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 435 (324)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 515 (384) Peak Torque — lb-ft (N•m). . 1550/1650 (2102/2238)Peak Torque — rpm . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . 43/32Altitude Capability — ft (m). . . . . . . 10,000 (3048)1Oil well service rating only

Operating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . . 2100Advertised hp (kW) . . . . . . . . . . . . . . . . . . 500 (373)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 515 (384) Peak Torque — lb-ft (N•m) . . . . . . . . . 1850 (2509)Peak Torque — rpm . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Altitude Capability — ft (m). . . . . . . 10,000 (3048)

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

435/500 hp MT (324/373 kW)1

300

350

To

rqu

elb

-ft

Po

wer

bh

p

950

500

550

1100

1550

1700

1850

1250

1400

400

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PERFORMANCE CURVES

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

500 hp (373 kW)

300

350

To

rqu

elb

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Po

wer

bh

p

950

500

550

1100

1550

1700

1850

1250

1400

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450

PERFORMANCE DATAOperating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 550 (410)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 550 (410)Peak Torque — lb-ft (N•m) . . . . . . . . . 1850 (2509)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

Operating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 600 (447)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 600 (447)Peak Torque — lb-ft (N•m) . . . . . . . . . 1850 (2509)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

PERFORMANCE CURVES

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

550 hp (410 kW)

300

350

To

rqu

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Po

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bh

p

950

500

550

1100

1550

1700

1850

1250

1400

400

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1100900 1300 1500 1700 1900 2100

Engine Speed rpm

600 hp (447 kW)

350

400

Torq

ue

lb-f

tP

ow

erb

hp

950

550

600

1100

1550

1700

1850

1250

1400

450

500

PERFORMANCE DATAOperating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 600 (447)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 600 (447) Peak Torque — lb-ft (N•m). . . . . . . . . . . . 2050 (2779)Peak Torque — rpm . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Altitude Capability — ft (m). . . . . . . 10,000 (3048)

Operating Range (rpm) . . . . . . . . . . . . . 1200–2100Governed Speed — rpm . . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 625 (466)Max hp (kW) . . . . . . . . . . . . . . . . . . . . . . . . 625 (466)Peak Torque — lb-ft (N•m) . . . . . . . . . 2050 (2779)Peak Torque — rpm. . . . . . . . . . . . . . . . . . . . . . 1200Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Altitude Capability — ft (m). . . . . . . 10,000 (3048)

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

600 hp (447 kW)

350

400

Torq

ue

lb-f

tP

ow

erb

hp

550

600

1100

1550

1700

1850

2000

2150

1250

1400

450

500

PERFORMANCE CURVES

1100900 1300 1500 1700 1900 2100

Engine Speed rpm

625 hp (466 kW)

300

350

Torq

ue

lb-f

tP

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hp

1000

500

550600

1200

1800

2000

2200

1400

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FUEL Model year 2007 and newer Caterpillar on-highway diesel engines require the use of ULSDfuel in order to meet the United States (U.S.)Environmental Protection Agency (EPA) 2007emissions regulations for on-highway dieselengines. Failure to use ULSD in these engines ispunishable with civil penalties.

Ultra Low Sulfur Diesel (ULSD) fuel will have ≤ 15 ppm (0.0015%) sulfur using the ASTM D5453, ASTM D2622, or DIN 51400 test methods.

CRANKCASE LUBE OILDiesel engine oils meeting the Cat ECF-3(Engine Crankcase Fluid-3) specification arestrongly recommended for use in 2007 modelyear and newer Caterpillar on-highway dieselengines. The Cat ECF-3 specification wasdeveloped in order to protect emissions controlsystems, help comply with the emissionsstandards, reduce engine wear, and controlpiston deposits and oil consumption in 2007model year and newer on-highway dieselengines that are designed to use fuels with ≤ 15ppm (0.0015%) sulfur.

The combination of ULSD fuel and API CJ-4compliant diesel engine oil is stronglyrecommended for optimum engine systemperformance.

Note: Oils that meet the API CJ-4 oil categoryrequirements are Cat ECF-3 compliant.

FUEL AND LUBE OIL REQUIREMENTSGEARING CONSIDERATIONSThe C15 On-Highway Diesel Engine offers awide operating range and high torque rise, whichpromotes the use of transmissions with fewergears. Even with this built-in feature,heavy/specialty haulers must remember theirtrucks should be geared to achieve theappropriate compromise between startability anddesired road speed. The general principal driversshould follow is that of the “gear fast, run slow”strategy to achieve optimal performance.

For the best balance of performance and fueleconomy, spec axle ratios and tire sizesaccording to the following:

• 80,000 lb GCW or lessLess than 1750 lb-ft: 1400 rpm @ 65 mph (105 km/h)

1750 lb-ft and above:1325 rpm @ 65 mph (105 km/h)

• 90,000 lb GCW or more1500 – 1650 rpm @ cruise speed

Multi-Torque:• 80,000 lb GCW or less435-hp, 1550/1750 lb-ft:1325 rpm @ 65 mph (105 km/h)

475-hp, 1650/1850 lb-ft:1325 rpm @ 65 mph (105 km/h)

Maximum recommended engine speed at cruiseis 1500 rpm.

The minimum startability requirements are 10%for pick-up and delivery, 14% for linehaul, 20%for on/off highway, and 25% for off-highway. Atpeak torque rpm in top gear, the recommendedgradeability is 1.8% (1.5% minimum). At cruisespeed in top gear, 1.0% is the ideal gradeability.

To optimize your truck’s performancecharacteristics, a computerized spec’ing toolcalled Design Pro is offered by your Caterpillardealer. It calculates effects of various drivelinevariables on engine operation such astransmissions, axles, and tires. This analysisallows you to verify that your truck’s drivelinespecifications are best suited to your application.


Materials and specifications are subject to change without notice. The International System of Units (SI) is used in this publication.CAT, CATERPILLAR, their respective logos, ACERT, “Caterpillar Yellow” and the POWER EDGE trade dress, as well as

corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.

LEHT4565-10 (6-07) ©2007 CaterpillarAll rights reserved.

Performance is based on SAE J1995 standardconditions of 29.61 in. Hg (100 kPa) and 77° F(25° C).

The curves shown are for a standard enginewithout fan, but equipped with air compressorand fuel, lubricating oil, and water pumps.

RATING DEFINITIONS AND CONDITIONS

ELECTRONIC FEATURES

n Customer selectable, re-programmableoperational parameters:- Adjustable low idle rpm - Automated transmission compatibility- Cooling fan control- Cruise control with exclusive Soft Cruise- Customer password protection- Engine Monitoring System — warning,

derate, or shutdown- Enhanced theft deterrent and secure idle

(Cat Messenger or Pocket Tec required)- Fleet Information Software capability- Idle shutdown timer & override- Maintenance monitor [miles (km) or hours]- OEM parameter lockout- Progressive shifting and gear down

protection- Vehicle speed [mph (km/h)] limiting and

protectionn Real time clock with date and time

stamping of critical eventsn Electronic self-diagnosticsn Electronically tabulated total fuel

consumption, hours, idle time, and miles

n Battery backupn Quick stop recordern Compatible with Caterpillar Electronic

Technician (ET)n Cold weather startup strategy and

electronic idle control functionsn ECM storage of operational, maintenance,

diagnostic codes and diagnostic datan J1939 compatiblen Programmable Power Take-Off (PTO)

functions:- Adjustable maximum engine rpm speed- Adjustable minimum engine rpm speed- Adjustable ramp rate up or down between

PTO set speed(s)- Adjustable rpm “bump” intervals- Adjustable speed control [mph (km/h)] of

vehicle while in PTO mode- Limit engine torque to driven equipment- Multi-speed PTO set speed capability- Kick-out vehicle speed limit- Selectable PTO configuration for “in cab”

or station of remote operation

Documents

Caterpillar C15 Engine Specs