
WP3N Series · 3.0 L · China marine Stage II emission
WP3N Series Marine Engine
Models: WP3NC115-30E220 · WP3NC130-30E220 · WP3NC150-30E220 · WP3NC160-30E220
Fuel type: ordinary diesel
85-118
Power range (kW)
3000
Speed range (r/min)



Product Advantages
- Safe and reliable. High-strength design of structural parts such as the block, pistons and bearing shells ensures diesel engine reliability under high firing pressure.
- Important components such as the turbocharger, starter and fuel system come from excellent global suppliers.
- Has undergone bench test and high temperature, extreme cold and high altitude test verification to ensure the reliability of key components, with a whole-engine time between overhauls (TBO) of more than 12000h.
- Complete self-diagnosis system, complete failure-protection mode and safe control strategy.
- Strong power. The control unit provides precise control, with high injection pressure, small speed fluctuation and strong power performance.
- Low-speed high-torque design with a large torque reserve, quick response and fast acceleration.
- Fuel efficient. Optimized injection rate pattern, with precise control of injection pressure, injection quantity and injection timing, full fuel atomization, a wide economical fuel consumption range and a minimum fuel consumption rate of 193g/ kW·h.
- Comfortable and eco-friendly. Rear gear train and enclosed flywheel housing effectively reduce noise, with noise under standard conditions 4dB(A) lower than competing products and no-load noise 2.5 dB(A)-4 dB(A) lower than competing products.
- Uses a second-stage balance mechanism and an offset piston pin structure, with whole-engine vibration better than competing products.
- Meets the ship China marine Stage II emission stage emission standard.
- Highly practical. Dedicated LCD instruments, with vibration isolation pads and a water-jacketed exhaust connecting pipe available as optional configurations.
- More than 95% of components are interchangeable with N series products, facilitating maintenance.
- Different control strategies can be adjusted according to different performance requirements.
- 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) | 94×107 |
| Number of cylinders | 4 |
| Displacement (L) | 3.0 |
| Torque reserve (%) | 27 |
| Oil consumption rate (g/kW·h) | ≤0.1 |
| Minimum fuel consumption rate (g/kW·h) | 193 |
| Idle speed (r/min) | 750±50 |
| Noise (dB(A)) | ≤93 |
| Crankshaft rotation direction | clockwise (viewed from the free end) |
| Overall dimensions (L×W×H) (mm) | 937×690×775 |
| Net weight (kg) | 390 |
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 |
|---|---|---|---|---|---|---|---|
| WP3N | WP3NC115-30E220 | turbocharged and intercooled | 85/115 | 3000 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
| WP3N | WP3NC130-30E220 | turbocharged and intercooled | 95/130 | 3000 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
| WP3N | WP3NC150-30E220 | turbocharged and intercooled | 110/150 | 3000 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
| WP3N | WP3NC160-30E220 | turbocharged and intercooled | 118/160 | 3000 | electronically controlled high-pressure common-rail pump | China marine Stage II emission | P3(MCD2) |
Request a Quote
Send the model designation (for example WP3NC115-30E220), the required quantity and your destination port.
At a glance
The WP3N Marine comes from an original Weichai diesel engine supplier and is built as a four-stroke, water-cooled, inline, turbocharged and intercooled unit, with 3.0 L displacement. Rated output spans 85–118 kW. It is supplied to meet China marine Stage II emission emission requirements. Typical duty is marine propulsion service.
Technical details
The Weichai WP3N Marine is built on a four-stroke, water-cooled, inline, turbocharged and intercooled configuration with 4 cylinders architecture. Displacement is 3.0 L. It is offered for 193 operation. For installation planning, the unit has a dry weight of 390 kg and an idle speed of 750±50 r/min.
Typical applications
The Weichai WP3N 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
WP3N Marine frequently asked questions
What is the power range of the Weichai WP3N Marine?
The WP3N Marine covers 85–118 kW. Confirm the exact sub-model code before ordering, because output varies across the model line-up.
Which emission standard does the WP3N 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 WP3N 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 WP3N 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 WP3N Marine?
The WP3N Marine is built on a four-stroke, water-cooled, inline, turbocharged and intercooled, 4 cylinders, 3.0 L of displacement layout. Send us your machine model if you need confirmation that this layout fits your installation.

