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WP3N 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 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 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.
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    R & D

    20000 +
    Global R & D personnel
    5+10 
    R & D institutions in five countries, ten regions

    Engines

    • 5,000,000 units
    • 22-10000Ps
    • 200 million kilowatts
    • Application for all markets

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