Weichai Group

WP12 series bus engine

Product parameters

Mode Displacement
（L） Number of valves per cylinder Rated power/speed
(kW/rpm) Maximum torque/speed
(N·m/rpm) Min. fuel consumption on external characteristic curve
(g/kW·h) Technical route Application

WP12.400E50 11.596 4 294/1900 1920/1000-1400 ≤185 CR+SCR 18m BRT
Over 12m
luxury coach

WP12.430E50 11.596 4 316/1900 2060/1000-1400 ≤185 CR+SCR 18m BRT
Over 12m
luxury coach

WP12.460E50 11.596 4 338/1900 2110/1000-1400 ≤185 CR+SCR 18m BRT
Over 12m
luxury coach

Product advantages

meet Euro V emission standards.

Comfort: The customized development of NVH ensures low noise and vibration.

Adaptability: The centrally located intake manifold and flat appearance design ensure easy arrangement.

More safe and reliable

Oil change period of 100,000 km is optional.

Better economy

The speed that can achieve minimum fuel consumption covers the whole working speed range.

The WEICHAI ECU control system improves driver’s shift schedule and thus reduces fuel consumption.

High configuration

The lightweight and modular design of the engine significantly reduces the weight of the engine and reduces the number of peripheral parts.

The cone-shaped silencer ring is used to suppress the high-frequency noise of the turbocharger. In addition, the pre-injection noise reduction technology is applied.

Mode	Displacement （L）	Number of valves per cylinder	Rated power/speed (kW/rpm)	Maximum torque/speed (N·m/rpm)	Min. fuel consumption on external characteristic curve (g/kW·h)	Technical route	Application
WP12.400E50	11.596	4	294/1900	1920/1000-1400	≤185	CR+SCR	18m BRT Over 12m luxury coach
WP12.430E50	11.596	4	316/1900	2060/1000-1400	≤185	CR+SCR	18m BRT Over 12m luxury coach
WP12.460E50	11.596	4	338/1900	2110/1000-1400	≤185	CR+SCR	18m BRT Over 12m luxury coach