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Products & ServiceTruck engines

WP4.1 series truck 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
WP4.1Q140E50 4.088 2 103/2600 450/1200-1800 ≤200 CR+SCR
light-duty cargo trucks of category N2 &N3
WP4.1Q150E50 4.088 2 110/2600 500/1200-1800 ≤200 CR+SCR light-duty cargo trucks of category N2 &N3
WP4.1Q165E50 4.088 2 120/2600 560/1200-1800 ≤200 CR+SCR light-duty cargo trucks of category N2 &N3


  • Power performance: High power, high torque (and high output torque at low speed).
  • Economy: The optimized powertrain system ensures low fuel consumption; the engine is able to achieve high mechanical efficiency at low speed, ensuring low fuel consumption.
  • Comfort: The customized development of NVH ensures low noise and vibration.
  • 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.
  • B10 life is greater than 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 engine noise is reduced to 76dB(A).
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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