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
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
Parameters Table
| Type | Four-stroke, water cooled, in-line, turbocharged | Number of cylinders | 4 |
| Cylinder diameter/stroke | 105×118(mm) | Displacement | 4.09L |
| Oil consumption rate | ≤0.6g/kW·h | Noise | ≤92dB（A） |
| Minimum fuel consumption rate | 212g/kW·h | Idle speed | 650±30r/min |
| Torque reserve | 20-35% | Net weight | 400kg |
|
Rotation direction of crankshaft (facing the free end) |
Clockwise | Emission standard | - |
| Dimensions | 1062×625×918（mm） | ||
Model Portfolio Table
| Series | Model | Air intake mode |
Rated power kW/Ps |
Speed r/min |
Fuel feeding | Emission level | Power classification |
| WP4.1 | WP4.1C54-15 | Turbocharged | 40/54 | 1500 | Mechanical pump | - | P1 |
| WP4.1C68-15 | Turbocharged | 50/68 | 1500 | Mechanical pump | - | P1 | |
| WP4.1C82-18 | Turbocharged | 60/82 | 1800 | Mechanical pump | - | P1 |