WP4.1N series marine diesel engine (88-140kW)
High-speed engine products including WP4.1,WP4,WP6,WP7,WD10,WD12,WP10, WP12,WP13,M26,M33, which are mainly used as the main engine and auxiliary engine of the high-speed ships and boats, passenger ship, and fishing boat and inland river transport ship; WHM6160/170 medium speed engine products, which are mainly used as the main engine, electric propeller and auxiliary engine of the bulk cargo carrier, car/passenger ferry, public service ship, offshore support vessel, ocean fishing vessel, engineering ship, multi-purpose ship; CW200/CW250/WH620/WH20/WH25/WH28 medium speed engine products, which are mainly used as the main engine, and auxiliary engine of the engineering ship, passenger ship, fishing boat, and bulk cargo carrier; and MAN series L21/31, L23/30A, L27/38, L32/40 and V32/40 products, which are mainly used as the main engine, electric propeller and auxiliary engine of the bulk cargo carrier, engineering ship, multi-purpose ship, and marine traffic management ship.
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Parameters Table A
| Type | Four-stroke, water cooled, in-line, turbocharged and aftercooled | Number of cylinders | 4 |
| Bore & stroke | 105×118 (mm) | Displacement | 4.088L |
| Oil consumption rate | ≤0.1 g/kW·h | Noise | ≤92 dB(A) |
| Minimum fuel consumption rate | 198 g/kW·h | Idle speed | 700 r/min |
| Rotation (facing the flywheel) |
Counter-clockwise | Net weight | 480 kg |
| Dimensions (L×W×H) | 960×700×850 (mm) | ||
Model Portfolio Table A
| Series | Model | Aspiration | Rated power kW/Ps |
Speed r/min |
Fuel system | Emission | Power rating |
| WP4.1N | WP4.1NC120-18E220 | TA | 88/120 | 1800 | HPCR | / | P1 |
| WP4.1NC130-21E220 | TA | 95/130 | 2100 | HPCR | / | P1 | |
| WP4.1NC142-18E220 | TA | 105/142 | 1800 | HPCR | / | P1 | |
| WP4.1NC163-21E220 | TA | 120/163 | 2100 | HPCR | / | P1 | |
| WP4.1NC190-26E220 | TA | 140/190 | 2600 | HPCR | IMO Ⅱ | P3 |
Product Parameters B
| Type | Four-stroke, water-cooled, in-line, direct injection | Number of cylinders | 4 |
| Bore/stroke | 105×118(mm) | Displacement | 4.08L |
| Startup method | Electric start | noise | ≤92dB(A) |
| noise | ≤97dB(A) | Oil consumption rate | ≤0.1g/kW·h |
| Crankshaft rotation direction (facing the flywheel end) |
Counterclockwise | Idle | 700r/min |
| Length × Width × Height | 960×700×850(mm) | net weight | 480kg |
Note: Product parameters and models are for reference only. Please contact relevant personnel to obtain official information on delivery time and fishing vessel models.
Product spectrum B
| series | model | Air intake method | Rated power kW/Ps | Rated speed r/min | Oil supply method | Emission levels | Power classification |
| WP4.1N* | WP4.1NC120-18E220 | Supercharged intercooler | 88/120 | 1800 | Electronically controlled common rail | China II | P1 |
| WP4.1NC143-18E220 | Supercharged intercooler | 105/143 | 1800 | Electronically controlled common rail | China II | P1 | |
| WP4.1NC130-21E220 | Supercharged intercooler | 95/130 | 2100 | Electronically controlled common rail | China II | P1 | |
| WP4.1NC163-21E220 | Supercharged intercooler | 120/163 | 2100 | Electronically controlled common rail | China II | P1 | |
| WP4.1NC177-23E220 | Supercharged intercooler | 130/177 | 2300 | Electronically controlled common rail | China II | P3 | |
| WP4.1NC190-26E220 | Supercharged intercooler | 140/190 | 2600 | Electronically controlled common rail | China II | 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 200g/kW·h
- Overhaul period of 12000 h
- Emissions meet IMOⅡ
Safe and reliable
- Body, cylinder head, piston, bearing and other structural parts of the new design, Weichai Rui power base production
- Using the global excellent supplier system of Weichai, the quality of parts is reliable
- 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 132% rated torque
Economical and fuel-efficient
- Adopt high pressure common rail technology, use Bosch fuel system, Weichai independent ECU, precise control of fuel injection volume
- Minimum fuel consumption rate 200g/kW•h
- Oil replacement cycle ≥500h
Comfortable and environmentally friendly
- NVH optimization match, low noise
- Gear chamber cover, cylinder cover, closed flywheel housing noise reduction design, reduce noise leakage
- Using electric control multiple injection, greatly reduce vibration and noise
- Emissions meet the requirements of IMOⅡ
Strong applicability
- Optional vibration isolation pad, hand pressure pump and other configurations to meet the needs of different customers
- Adjust different control strategies according to different performance requirements
- Receive/output a variety of control signals to meet the requirements of automatic control
WP4.1N series marine diesel en...
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