Designed as main or auxiliary power for 600–1,200-ton inland transport ships, 20–30-meter sightseeing vessels, and 15–25-meter fishing boats, the Yuchai YCA08 Marine Auxiliary Engine provides stable and efficient power for diverse marine applications. With a compact structure, refined noise control, and optimized combustion technology, it enhances vessel comfort while ensuring long-term reliability and economic operation.

Low Vibration and Noise

The engine features optimized structural design that significantly reduces vibration and operating noise. As a result, overall vessel handling becomes smoother and more comfortable. Idle noise levels remain below 75.1 dB, creating a quieter engine room and a more pleasant operating environment for crew and passengers.

High Reliability

The cylinder block and cylinder head use high-strength alloy cast iron for enhanced durability. An integral forged steel crankshaft combined with sliding bearings ensures stable operation while keeping the engine compact and lightweight. This robust configuration supports high reliability and extends service life, with a major overhaul interval exceeding 15,000 hours.

Economic and Efficient Performance

Four-valve technology and Yuchai’s patented combustion chamber design optimize the combustion process. Precise control of fuel injection quantity and timing allows fuel to atomize fully and burn efficiently. As a result, the engine achieves strong economic performance, with minimum fuel consumption as low as 190 g/kWh, helping reduce operating costs over long-term service.