WP4 Series

Safe and Reliable

High-strength design for the engine block, crankshaft, connecting rods, and cylinder head achieves a diesel engine overhaul interval of 12,000 h.

Components are sourced from Weichai's high-quality suppliers and developed to meet the stringent reliability requirements of high-displacement engines.

Rigorous and comprehensive testing ensures the reliability of critical components.

Powerful Performance

Offers a torque reserve of up to 20%–35% with a wide high-torque range, providing excellent acceleration for marine applications.

Economical and Fuel-Efficient

Optimized configuration of the oil pump, turbocharger, and intake/exhaust systems ensures low fuel consumption and high efficiency under common operating conditions.

Utilizes a shallow ω-type combustion chamber with optimized cylinder clearance and swirl ratio, achieving a minimum specific fuel consumption of 195 g/kW·h.

Comfortable and Environmentally Friendly

Optimized NVH characteristics effectively reduce vibration and noise.

High Practicality

Suitable as a marine main engine for passenger ships, cargo ships, official vessels, fishing boats, and tourist vessels.