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Products & ServiceNew energy engines

WP12NG series engine


Product portfolio

Model Displacement
Number of valves per cylinder Rated power/speed
Maximum torque/speed
Min. fuel consumption on external characteristic curve
Technical route Applicable model
WP12NG350E52 11.6 4 257/1900 1650/1200-1500 185 Lean combustion + DOC 12–14M passenger buses、14–18M public buses、Tractors、Dump trucks
WP12NG380E51 280/1900 1700/1200-1500
WP12NG400E50 294/1900 1730/1200-1500

Product advantages

Power performance

  • The four-valve structure effectively significantly improves output torque at low speed and maximum torque, as well as responsiveness during acceleration and start-up.


  • The rated speed is reduced to 1,900rpm, the absolute fuel consumption in bench test is reduced by 3%, ensuring a wider economic speed range.
  • The fuel economic zone shifts to the low speed range; squish effect is strengthened and combustion speed is increased.
  • The intelligent ignition coil increases ignition energy, reduces load cycle variation of low-speed part, and reduces fuel consumption.


  • The new-type ECU has a good resistance against heat, vibration and electromagnetic interference, and is directly installed on the engine.
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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