WP3N 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 A
| 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 | Applicable model |
| WP3NQ140E50 | 2.97 | 4 | 103/3000 | 380/1400-2400 | ≤205 | CR+SCR | 5.9-7.5m city bus 6-7m coach 7-8m school bus |
| WP3NQ160E50 | 2.97 | 4 | 118/3000 | 480/1400-2300 | ≤205 | CR+SCR | 5.9-7.5m city bus 6-7m coach 7-8m school bus |
| WP3NQ158E62 | 2.97 | 4 | 116/2800 | 500/1300-2200 | ≤200 | CR+DOC+DPF+Hi-SCR | 6-7.7m city bus 7-8.5m school bus |
| WP3NQ170E62 | 2.97 | 4 | 125/2800 | 520/1400-2100 | ≤200 | CR+DOC+DPF+Hi-SCR | 6-7.7m city bus 7-8.5m school bus |
Product spectrum B
| model | Displacement ( L ) | Number of valves per cylinder | Rated power/speed (kW/rpm) |
Maximum torque/speed (N · m/rpm) |
Emission standards | Technical route | Suitable models |
| WP3NQ158E62 | 3 | 4 | 116/2800 | 500/1300-2200 | National VI | CR+DOC+DPF+Hi-SCR | 6.0-7.3m passenger bus, 7.0-8.5m school bus |
| WP3NQ170E62 | 3 | 4 | 125/2800 | 520/1400-2100 | National VI | CR+DOC+DPF+Hi-SCR | 6.0-7.3m passenger bus, 7.0-8.5m school bus |
Product advantages
Reliability
- The wet cylinder liner, gantry type drum engine block, integral cast iron cylinder head are adopted; and the new design of moving parts such as piston, connecting rod, crankshaft and bearing shell is adopted. B10 life is 800,000km.
- WEICHAI premium suppliers develop the relevant products according to the high reliability requirements in the heavy truck industry.
- The engine block and the cylinder head are casted and machined by WEICHAI, ensuring high consistency.
Economy
- Min. fuel consumption: 200g/(kW•h).
Power performance
- Power: 103kW~125kW, maximum torque: 520N•m/(1400~2100)r/min.
- The engine has higher torque and higher power when compared with competing products of same displacement.
Comfort
- The rear-mounted gear chamber, enclosed flywheel housing, and plastic cylinder head cover are adopted, which effectively reduce noise, making the rated noise 4dB(A) lower than that of competing products.
- The standard engine block stiffening plate is used, which ensures a better engine vibration reduction performance than that of competing products. The optional secondary balance mechanism can reduce engine vibration further.
Adaptability
- The modular design, compact layout of peripheral accessories, and various optional structures ensure a wider range of application.
- The oil filter, alternator, starter and other parts of N platform are universal, ensuring the convenience of maintenance.
WP3N series bus engine
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