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  • Home – Products – Weichai WP12 series marine diesel engine (295-405kW)
    Weichai WP12 series marine diesel engine (295-405kW)
    • Brand: Weichai
    • Model: WP12
    • Cylinder No.: 6 cylinder
    • Power: 295-405kW
    • Bore*Stroke: 126×155(mm)
    • Displacement: 11.596L
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    Product Description:

    Safe and reliable

    The high-strength design of structural parts such as engine block, piston and bearing bush ensures the reliability of diesel engine under high explosion pressure

    For turbocharger, starter, high-pressure oil pump and other important parts, global excellent suppliers are used

    Withstand the most stringent durability test and assessment; ensure the reliability of key parts and components; and the overhaul period of the whole engine is over 20000h

    Perfect self-diagnosis system, perfect failure protection mode, and safe control strategy

    Strong power

    Accurate control by electronic control units, high injection pressure, small fluctuation of rotating speed, and strong power

    Low-speed and high-torque design with the torque reserve of 25%-35%, quick response, and fast speed increase

    Economical and fuel-efficient

    The fuel injection law is optimized, the fuel injection pressure, fuel injection quantity and fuel injection time are accurately controlled, the fuel is fully atomized, and the minimum fuel consumption rate is 191g/kW•h

    Comfortable and environmentally friendly

    It can realize multiple injections such as pre-injection and post-injection, and the noise and vibration are reduced by 20% compared with the mechanical pump system

    Water jacket exhaust pipe and water jacket exhaust tail pipe are used to reduce engine compartment temperature

    IMOⅡ ship emission standards are met 

    Strong practicability

    LCD Internet instruments, vibration isolators, and hand-pressed oil well pumps can be equipped to meet the requirements of different customers

    Horizontal air filter and rear turbocharger reduce the height of the whole engine and facilitate the layout of the engine compartment 

    Different control strategies are adjusted according to different performance requirements

    Receive/output various control signals, which meet the requirements of automation control

    Technical Data:
    Four stroke, water cooling, in line, turbocharged intercooling
    Bore*Stroke 126*155mm
    Displacement 11.596Liters
    Cylinder No. 6 cylinder
    Oil consumption ≤0.5g/kW·h
    Lowest fuel consumption 191g/kW·h
    Noise ≤97dBA
    Idle speed 600±30r/min
    Crankshaft rotation direction (To the free end) Clockwise
    Series Model Air intake mode Rated power Rated Speed Fuel feeding mode Emission level Power classification
    kW/Ps r/min
    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
    WP12C500-21E121 Turbocharged and intercooled 368/500 2100 Electronical-controlled common rail IMO P2
    WP12C550-21E121 Turbocharged and intercooled 405/550 2100 Electronical-controlled common rail IMO P3
    Successful Cases:
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