
WP2.3N Series · 2.3 L · China marine Stage II emission
WP2.3N Series Marine Engine
Models: WP2.3NC54-18E220 · WP2.3NC68-18E220 · WP2.3NC82-18E220 · WP2.3NC102-21E220 · WP2.3NC110-25E220 · WP2.3NC88-32E220 · WP2.3NC102-32E220 · WP2.3NC115-32E220 · +1 more in the line-up
Fuel type: ordinary diesel
40-95
Power range (kW)
1800-3200
Speed range (r/min)



Product Advantages
- Safe and reliable. All-new Weichai N series platform product, with all-new design of structural parts such as block, cylinder head, pistons and bearing shells and a time between overhauls (TBO) of 12000h.
- Uses high-quality suppliers of the Weichai system and is developed according to the high reliability requirements of large-displacement engines.
- Rigorous and complete bench testing methods ensure the reliability of key components such as the turbocharger, crankshaft, heat exchanger, intercooler and starter.
- Strong power. High torque within the medium and low speed range, continuous output, strong power, excellent acceleration performance and a torque reserve of 34%.
- No power loss under common operating conditions at 2000m altitude.
- Fuel efficient. High-pressure common rail technology makes the low fuel consumption range even wider, with a minimum fuel consumption rate 7 g/kW·h lower than competing products and fuel consumption in the common operating range (4-8) g/ kW·h lower than competing products.
- The economical speed is (1300-2600) r/min, wider than that of competing products.
- Oil change interval of 500h.
- Comfortable and eco-friendly. Whole-engine NVH optimization and matching, with noise-reduction designs of the gear train cover, cylinder head cover and enclosed flywheel housing to reduce noise leakage.
- Uses block reinforcement plates and an offset piston pin structure, with whole-engine vibration better than competing products.
- Uses electronically controlled multiple injection to greatly reduce vibration and noise, with an idle noise of 74dB(A).
- Meets the emission standard of the ship China marine Stage II emission.
- Highly practical. Optional configurations such as the installed seawater pump and vibration damping pads meet different customer needs.
- Horizontal filter arrangement reduces the overall engine height.
- Receives and outputs multiple control signals to meet automatic control requirements.
Specifications
| Engine type | four-stroke, water-cooled, inline, turbocharged and intercooled |
| Bore / stroke (mm) | 89×92 |
| Number of cylinders | 4 |
| Displacement (L) | 2.3 |
| Torque reserve (%) | 34 |
| Oil consumption rate (g/kW·h) | ≤0.1 |
| Minimum fuel consumption rate (g/kW·h) | 200 |
| Idle speed (r/min) | 750 |
| Noise (dB(A)) | ≤96 |
| Crankshaft rotation direction | clockwise (viewed from the free end) |
| Overall dimensions (L×W×H) (mm) | 854×688×822 |
| Net weight (kg) | 310 |
Note: product parameters and images are for reference only and are subject to change without notice.
Note: for products marked with an asterisk (*), the delivery time is subject to the manufacturer’s confirmation; the parameters and model line-up are for reference only, and delivery dates and fishing-vessel line-ups should be requested from us as formal documentation.
Model Line-up
| Series | Model | Aspiration | Power (kW / Ps) | Speed (r/min) | Technology route | Emission level | Power rating |
|---|---|---|---|---|---|---|---|
| WP2.3N | WP2.3NC54-18E220 | turbocharged and intercooled | 40/54 | 1800 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P1 (MCR) |
| WP2.3N | WP2.3NC68-18E220 | turbocharged and intercooled | 50/68 | 1800 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P1 (MCR) |
| WP2.3N | WP2.3NC82-18E220 | turbocharged and intercooled | 60/82 | 1800 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P1 (MCR) |
| WP2.3N | WP2.3NC102-21E220 | turbocharged and intercooled | 75/102 | 2100 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P1 (MCR) |
| WP2.3N | WP2.3NC110-25E220 | turbocharged and intercooled | 81/110 | 2500 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P1 (MCR) |
| WP2.3N | WP2.3NC88-32E220 | turbocharged and intercooled | 65/88 | 3200 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
| WP2.3N | WP2.3NC102-32E220 | turbocharged and intercooled | 75/102 | 3200 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
| WP2.3N | WP2.3NC115-32E220 | turbocharged and intercooled | 85/115 | 3200 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
| WP2.3N | WP2.3NC130-32E220 | turbocharged and intercooled | 95/130 | 3200 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
Request a Quote
Send the model designation (for example WP2.3NC54-18E220), the required quantity and your destination port.
At a glance
As an original Weichai diesel engine supplier, we supply the WP2.3N Marine built as a four-stroke, water-cooled, inline, turbocharged and intercooled unit, with 2.3 L displacement. Rated output spans 40–95 kW. It is supplied to meet China marine Stage II emission emission requirements. Typical duty is marine propulsion service.
Technical details
The Weichai WP2.3N Marine is built on a four-stroke, water-cooled, inline, turbocharged and intercooled configuration with 4 cylinders architecture. Displacement is 2.3 L. It is offered for 200 operation. For installation planning, the unit has a dry weight of 310 kg and an idle speed of 750 r/min.
Typical applications
The Weichai WP2.3N Marine is specified for marine propulsion duty. Confirmed applications include the following, and we can advise on suitability for your machine:
- Fuel type: ordinary diesel
WP2.3N Marine frequently asked questions
What is the power range of the Weichai WP2.3N Marine?
The WP2.3N Marine covers 40–95 kW. Confirm the exact sub-model code before ordering, because output varies across the model line-up.
Which emission standard does the WP2.3N Marine meet?
This unit is offered to China marine Stage II emission. Tell us your destination market and we will confirm the certification route before shipment.
Is the WP2.3N Marine a genuine Weichai engine?
Yes. Units are sourced through controlled supply channels to original factory specification and are supplied with export packing and documentation.
How is the WP2.3N Marine shipped and how long does delivery take?
Engines are crated for export and consolidated at the port. Send your model designation, quantity and destination port for a firm quotation and lead time.
What is the configuration of the WP2.3N Marine?
The WP2.3N Marine is built on a four-stroke, water-cooled, inline, turbocharged and intercooled, 4 cylinders, 2.3 L of displacement layout. Send us your machine model if you need confirmation that this layout fits your installation.

