WP12 series bus engine
weichai bus engines, with the displacement ranging from 2.3L to 12L and the power ranging from 88kW to 338kW, meet Euro V, Euro VI and other emission standards, and are applicable to various buses with a length greater than 5m such as school buses, passenger buses, private buses, touring buses, public buses, hybrid electric buses, and special buses. These new-generation products (WP2.3N/WP2.5N/WP3N/WP4.1N/WP4.6N) are applicable to rural public buses, minibuses, long-nose school buses, high-end MPVs, European light buses, and characterized by high reliability, strong power, fuel saving and environmental protection.
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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.
WP12 series bus engine
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