Weichai WP12 series marine diesel engine 400hp
Product advantages
WP12/WP13 blue engine series diesel engine is an energy-saving and environmentally-friendly marine diesel engine independently developed by Weichai in 2004 based on the characteristics and configuration requirements of the ship's power usage and adopting a new design concept for special optimization and development. Its structure is compact and powerful. With good economy and high reliability, it is the best supporting power for ships such as inland waterway navigation, fishery fishing, official boats, yachts, and passenger ships.
 
Product parameters
 
| Type | Four-stroke, water cooled, in-line, turbocharged and intercooled | Number of cylinders | 6 | 
| Cylinder Bore/stroke | 126×155(mm) | Displacement | 11.596L | 
| Oil consumption rate | ≤0.5g/kW·h | Noise | ≤100dB(A) | 
| Minimum fuel consumption rate | 191g/kW·h | Idle speed | 600±50r/min | 
| Torque reserve | 25-35% | Rotation direction of crankshaft (facing the flywheel end) | Counter-clockwise | 
| Dimensions Length × Width × Height/net weight | 
Mechanical pump 1695×858×1385(mm) 1200kg 
 Electronical-controlled pump and rear turbocharger 1683×928×1264(mm) 1200kg | ||
 
Product portfolio
 
| Series | Model | Air intake mode | Rated power kW/Ps | Speed r/min | Fuel feeding mode | Emission level | Power classification | 
| WP12 | WP12C400-18 | Turbocharged and intercooled | 295/400 | 1800 | Mechanical pump | IMO | P1 | 
| WP12C450-21 | Turbocharged and intercooled | 330/450 | 2100 | Mechanical pump | IMO | P1 | |
| WP12C500-21 | Turbocharged and intercooled | 368/500 | 2100 | HPCR | IMO | P2 | |
| WP12C550E212 | Turbocharged and intercooled | 405/550 | 2100 | HPCR | IMO | P3 | 
Product Features
| 
Engine and block
 
Cast iron frame style body structure 
 
One-piece forged crankshaft 
 
Separate cast iron cylinder heads and dry liners 
 
Aluminium alloy pistons with gallery oil cooling
 
Cooling system
 
Fresh / raw water heat exchanger with integrated thermostatic 
 
valves and expansion tank 
 
Cast iron centrifugal fresh water pump, mechanically driven 
 
Self-priming raw water pump, mechanically driven
 
Lubrication system
 
Full flow duplex type oil filters replaceable engine running 
 
Fresh water cooled lube oil cooler plate type 
 | 
Fuel system
 
P type in line injection pump 
 
Dual-skinned fuel pipe with alarm and leakage collector 
 
Duplex fuel filters replaceable engine running 
 
Water separated filter
 
Intake air and exhaust system
 
Washable air filter & exhaust expansion joint 
 
Insulated dry type or water jacket exhaust manifold
 
Electrical system
 
24V electric starter motor and battery charging alternator 
 
Voyage safeguard monitor and 5m harness
 
Flywheel and housin
 
SAE1 flywheel housing and SAE 14 flywheel
 
Certification
 
CCS and EIAPP
 | 
| 
Power definition
 
Standard ISO 3046/1 -1995(F)
 
Reference conditions 
 
Ambiant temperature 
 
25 °C 
 
Barometric pressure 
 
100 kPa 
 
Relative humidity
 
30% 
 
Raw water temperature 
 
25 °C
 | 
Fuel 
 
Relative density 0,840 ± 0,005 
 
Lower calorific power 42 700 kJ/kg 
 
Consumption tolerances 
 
± 5 %
 
Lube oil 
 
Recommend grade 
 
CF-4 15W/40
 | 
 
 
 
 
 
 
