WP12H 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
Highly reliable
- B10 life is up to 1,800,000 km.
- A high position of the engine block is cooled , and the upper part of the cylinder liner has an independent cooling cycle.
- The cylinder head adopts Top-Down cooling to reduce the temperature of top land.
- The moving parts are designed with high reliability structure.
Powerful
- WP12H diesel engine has a maximum torque of 2300 N·m.
Excellent performance
- Integral cylinder head, 4 valves per cylinder.
- Matching design of new type combustion chamber and intake and exhaust way.
High safty
- Cylinder head cover are sealed with vibration isolation rubber.
- Insulation protection for high temperature parts.
Excellent NVH performance
- Cylinder head cover are sealed with vibration isolation rubber.
- With rear gear chamber.
- Plastic cylinder head cover.
Lightweight Design
- Application of lightweight materials such as plastics and aluminum alloys.
- Integrated Modular Design.
- Plastic cylinder head cover.
Easy and low-cost maintenance
- Integrated oil cooling filter module, only replace the filter element.
- Integrated fuel filter module, only replace the filter elementss.
WP12H series bus engine
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