WP4.1 series marine diesel engine (40-60kW)
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
| Type | Four-stroke, water cooled, in-line, turbocharged | Number of cylinders | 4 |
| Bore & stroke | 105×118 (mm) | Displacement | 4.09L |
| Oil consumption rate | ≤0.6 g/kW·h | Noise | ≤92 dB (A) |
| Minimum fuel consumption rate | 212 g/kW·h | Idle speed | 650±30 r/min |
| Rotation (facing the flywheel) |
Counter-clockwise | Net weight | 400 kg |
| Dimensions (L×W×H) | 1062×625×918 (mm) | ||
Model Portfolio Table
| Series | Model | Aspiration | Rated power kW/Ps |
Speed r/min |
Fuel system | Emission | Power rating |
| WP4.1 | WP4.1C54-15 | T | 40/54 | 1500 | Mechanical pump | / | P1 |
| WP4.1C68-15 | T | 50/68 | 1500 | Mechanical pump | / | P1 | |
| WP4.1C82-18 | T | 60/82 | 1800 | Mechanical pump | / | P1 |
Remark: 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
Safe and reliable
- The overhaul period of high-strength engine block, crankshaft, connecting rod and cylinder head is 12000h
- Rigorous and perfect test methods ensure the reliability of key parts and components
Strong power
- The torque reserve is as high as 20%-35%, the range of large torque section is wide, and the ships equipped with the engine will have good acceleration
Economical and fuel-efficient
- Reasonable allocation of oil pump, turbocharger, air intake and exhaust system; low oil consumption under common working conditions; good economical nature
- With shallow ω combustion chamber, the best cylinder clearance and swirl ratio, the fuel consumption rate is as low as 212g/kW•h
- Customized design for lower fuel consumption
Comfortable and environmentally friendly
- The NVH optimization for the whole engine effectively reduces vibration and noise
- There is no IMO emission requirement
Strong practicability
- LCD Internet instrument can be selected to monitor engine operating parameters in real time, so as to realize automatic alarm and stop
- It is suitable for marine engines such as passenger ships, cargo ships, public service ships, fishing boats and tourist ships
WP4.1 series marine diesel eng...
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