WP4.1 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.

Comfortable and Environmentally Friendly

Optimized NVH characteristics effectively reduce vibration and noise.

Complies with IMO Tier II emission standards.

High Practicality

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