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Products & ServiceMarine engines

Weichai WP2.3N series marine diesel engine (40-95kW)

Parameters Table

Type Four-stroke, water cooled, in-line, turbocharged and aftercooled Number of cylinders 4
Bore & stroke 89×92 (mm) Displacement 2.3L
Oil consumption rate ≤0.1 g/kW·h Noise ≤96 dB(A)
Minimum fuel consumption rate 190 g/kW·h Idle speed 750 r/min
(facing the flywheel)
Counter-clockwise Net weight 310 kg

Dimensions (L×W×H)

730×688×822 (mm)

Model Portfolio Table

Series Model Aspiration Rated power kW/Ps Speed r/min Fuel system Emission Power rating
WP2.3N WP2.3NC54-18E220 TA 40/54 1800 HPCR / P1
WP2.3NC68-18E220 TA 50/68 1800 HPCR / P1
WP2.3NC82-18E220 TA 60/82 1800 HPCR / P1
WP2.3NC102-21E220 TA 75/102 2100 HPCR / P1
WP2.3NC110-25E220 TA 81/110 2500 HPCR / P1
WP2.3NC130-32E220 TA 95/130 3200 HPCR / P3

Remark: The delivery date of products marked with * shall be subject to the reply of the manufacturer. Product parameters and model portfolio are for reference only. Please contact relevant personnel for official information on delivery time and fishing boat model portfolio.

Product description

  • High torque reservation
  • Minimum fuel consumption 195g/kW·h
  • Overhaul period of 12000 h

Safe and reliable

  • Weichai brand new N series platform products, the body, cylinder head, piston, bearing shell and other structural parts of a new design
  • Adopt high-quality Weichai system suppliers and develop in accordance with the high reliability requirements of large-displacement engines
  • Dust-free, constant temperature assembly workshop, high precision test bench

Strong power

  • High torque in medium and low speed range, continuous output and strong power
  • Precise control by electronic control unit, high injection pressure and superior acceleration performance
  • 50% rated speed can reach 134% rated torque 

Economical and fuel-efficient

  • Using electronic control high pressure common rail technology, accurate control of fuel injection, economic operation area is wider
  • Minimum fuel consumption rate 195g/kW•h
  • Oil replacement cycle ≥500h
  • Customized design for lower fuel consumption

Comfortable and environmentally friendly

  • Electronic control multiple injection, greatly reduce vibration and noise, idle noise 74dB (A)
  • NVH optimization matching of the whole machine, gear chamber cover, cylinder cover, closed flywheel housing noise reduction design, reduce noise leakage
  • Adopt body stiffening plate, piston pin offset structure, the vibration of the whole machine is better than that of competing products

Strong applicability

  • Weichai intelligent cloud platform, big data processing, remote diagnosis
  • Intelligent terminal, maintenance reminder
  • Horizontal filter arrangement, reduce the height of the machine, compact structure
  • Optional Internet intelligent instrument, installed sea water pump, damping pad and other configurations, to meet the needs of different customers 
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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