Caterpillar C32

The Caterpillar C32 is a V12 diesel engine made by Caterpillar Inc. The engine displacement is 32.1 liters (1959 cubic inches). The cylinder size is 5.71 inches x 6.38 inches bore/stroke. The engine can produce up to 1900 horsepower at 2300 rpm. The peak torque of 5532 lb-ft occurs at an engine speed of 1300 to 1800 RPM. The engine weighs over three tons at 6780 pounds. The C32 is used in CAT equipment including the 777G mining truck and the D11T bulldozer. It is also sold for use in rail^[2] and marine applications, and for other industrial applications such as crushers, pumps, and drills.^[3]

Caterpillar C32[1]
Caterpillar C32 engine
Overview
Manufacturer	Caterpillar Inc.
Production	2006-
Layout
Configuration	Four-stroke V12
Displacement	32,100 cubic centimetres (1,959 in3)
Cylinder bore	145 millimetres (5.709 in)
Piston stroke	162 millimetres (6.378 in)
Cylinder block material	Iron
Cylinder head material	Iron
Compression ratio	15.3:1
RPM range
Idle speed	545
Max. engine speed	2350
Combustion
Turbocharger	Twin turbocharged
Management	Electronic (ACERT) with mechanical failsafe
Oil system	Wet sump
Output
Power output	1,491 kilowatts (1,999 hp) @ 2200 rpm (marine/military rating)
Torque output	7,500 newton-metres (5,532 lbf⋅ft) @ 1300-1800 rpm
Dimensions
Dry weight	3,145 kilograms (6,934 lb)
Emissions
Emissions target standard	EPA T4, Euro V or IMO 3
Emissions control systems	Exhaust gas recirculation Selective catalytic reduction
Chronology
Predecessor	Caterpillar 3400 series engine
Successor	Caterpillar C32B

Caterpillar C32B

Caterpillar C32B[4]
Overview
Manufacturer	Caterpillar Inc.
Production	2020-present
Layout
Configuration	Four-stroke V12
Displacement	32,100 cubic centimetres (1,959 in3)
Cylinder bore	145 millimetres (5.709 in)
Piston stroke	162 millimetres (6.378 in)
Valvetrain	DOHC
Compression ratio	15.3:1
RPM range
Idle speed	545
Max. engine speed	2400
Combustion
Turbocharger	Quad
Fuel system	Unit injection (see management)
Management	Electronic (ACERT) with mechanical failsafe
Fuel type	Diesel
Oil system	Wet sump
Cooling system	Water cooled
Output
Power output	1,805 kilowatts (2,421 hp; 2,454 PS) @ 2400 rpm (marine/military rating)
Torque output	7,500 newton-metres (5,532 lbf⋅ft) @ 1300-2400 rpm
Dimensions
Dry weight	3,400 kilograms (7,500 lb)
Emissions
Emissions target standard	EPA T3, Euro III or IMO 2
Emissions control systems	Exhaust gas recirculation Selective catalytic reduction
Chronology
Predecessor	Caterpillar C32

The Caterpillar C32B is a V12 diesel engine made by Caterpillar Inc. The engine displacement is 32.1 liters (1959 cubic inches). It is normally painted in grey. The cylinder size is 5.71 inches x 6.38 inches bore/stroke. The C32B is the most power-dense high-speed diesel engine^{[note 1]} of Caterpillar. The engine can produce up to 2433 marine horsepower at 2300 rpm.^[5] The peak torque of 5532 lb-ft occurs at an engine speed of 1300 to 1800 RPM. The engine has an iron block, painted in grey. The engine weighs over three tons at 7500 pounds. The C32B is used in marine and military applications.

Notes

1. To see what speed range is considered high speed, see:High-speed diesel engine.