Engineering: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 mining equipment including the 777G mining truck and the D11T bulldozer. It is also sold for use in rail[2] and marine[3] applications, and for other industrial applications such as power generation[4]. The engine has been found to carry a mean time between failures of over 1200 hours and a reliability rating of 95% in a marine environment.[5]
Caterpillar C32B
| Caterpillar C32B[6] | |
|---|---|
| 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 |
| Redline | 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 technology | |
| 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.[7] 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 was initially released with a marine-focused construction in 2020.[8] Another variant designed for heavy equipment such as cranes, drills, and haulers was released in 2025.[9][10]
Notes
- ↑ To see what speed range is considered high speed, see:High-speed diesel engine.
References
- ↑ "Marine Power Systems". https://www.cat.com/en_GB/products/new/power-systems/marine-power-systems/high-performance-propulsion-and-maneuvering-solutions/106140.html.
- ↑ "EffiShunter 1000". http://www.czloko.cz/en/locomotives/effishunter-1000.html. Retrieved 1 February 2017.
- ↑ "Specifications". 2010. http://www.dangleterre2.com/specs.
- ↑ "The History of the Caterpillar C32 Engine". https://www.ipdparts.com/resources/blog/history-of-the-caterpillar-c32-engine/.
- ↑ Ojo, E.; Ujile, Awajiogak; Nkoi, Barinyima (2022). "Improving the Reliability of the Cooling Water System of a Marine Diesel Engine: A Case Study of Caterpillar C32 Diesel Engine". International Journal for Research in Applied Science and Engineering Technology (Nigeria) 10 (V). ISSN 2321-9653. https://www.researchgate.net/publication/360974679_Improving_the_Reliability_of_the_Cooling_Water_System_of_a_Marine_Diesel_Engine_A_Case_Study_of_Caterpillar_C32_Diesel_Engine.
- ↑ "C32B". 2020. https://www.cat.com/en_US/products/new/power-systems/marine-power-systems/high-performance-propulsion-and-maneuvering-solutions/106140.html.
- ↑ "Caterpillar Marine C32B 2433hp. It's a super-power!" (in en-US). 2021-01-21. https://www.powertraininternationalweb.com/marine/caterpillar-c32b-2433hp-boom/.
- ↑ "Caterpillar introduces the Cat C32B marine engine". 2020-08-28. https://www.shippax.com/en/press-releases/caterpillar-introduces-the-cat-c32b-marine-engine.aspx.
- ↑ "Caterpillar launched C32B". 2025-09-26. https://www.powertraininternationalweb.com/off-highway/cat-c32b-offhighway/.
- ↑ "Cat’s new 1,200 hp C32B engine delivers high power density". 2025-09-25. https://www.equipmentjournal.com/construction-equipment/cats-new-1200-hp-c32b-engine-delivers-high-power-density/.
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