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Products & ServiceBus engines

WP2.5N series bus engine

Product portfolio

Mode Displacement
Number of valves per cylinder Rated power/speed
Maximum torque/speed
Min. fuel consumption on external characteristic curve
Technical route Applicable model
WP2.5NQ150E61 2.49 4 110/2900 400/1400-2200 ≤205 CR+EGR+DOC+DPF+SCR 6.6-7m city bus
6.6-7m coach
school bus
WP2.5NQ160E61 2.49 4 118/2900 450/1400-2200 ≤205 CR+EGR+DOC+DPF+SCR

6.6-7m city bus
6.6-7m coach
school bus

Product advantages

  • Emission standards: Euro V/VI.
  • Powerful: High torque: 380N•m, output torque at low speed: 245N•m.
  • Economy: Minimum fuel consumption: 200g/(kW·h).
  • Comfort: The customized development of NVH ensures low noise and vibration.
  • Universality: The BOSCH system is used in the fuel system, which guarantees the maximum universality of parts.
  • Light weight: Its applies a large number of cast aluminum parts and weighs 230kg, which is the lightest one among those products of same power.
  • Small size: The engine is 810mm long, ensuring the easy assembling in OEM.
  • More safe and reliable

  • The movement speed of moving parts is reduced, and the movement time is prolonged.
  • The wear of friction pairs per unit time is reduced.
  • The service life of the crankshaft flywheel system and gear system is prolonged.
  • The engine block, piston, bearing shell, etc. are improved comprehensively, and B10 life is 800,000 km.
  • Better economy

  • The speed ratio of drivetrain is reduced, improving transmission efficiency.
  • The driver‘s shift schedule is improved, reducing fuel consumption.
  • More comfortable

  • The high frequency torsional vibration zone of the engine is avoided.
  • The noise reduction flywheel housing is used and its noise level is 92d(B) under common operating conditions.
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    R & D

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


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