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  • Man L21 31 Marine Diesel Engine - China

    price: contact company for price

    L21/31

    Bore: 210mm, Stroke: 310mm

    Speed

    mep r/min

    bar 100

    24.1

    kW

    6L21/31 1, 290

    7L21/31 1, 505

    8L21/31 1, 720

    9L21/31 1, 935

    Specific Fuel Oil Consumption(SFOC)to ISO conditions

    MCR 100% 85%

    L21/31 195g/kWh 189g/kWh

    Specific lube oil consumption 0.8g/kWh

    Dimensions

    Cyl.

    No.

    6 7 8 9

    L mm 4, 225 4, 580 4, 935 5, 290

    L1 mm 3, 285 3, 640 3, 995 4, 350

    H mm 3, 115 3, 115 3, 267 3, 267

    W mm 1, 695 1, 695 1, 820 1, 820

    Dry mass t 16.0 17.5 19.0 20.5

    Minimum centreline distance for twim engine

    installation: 2, 400mm

    Main Data

    Number of cylinder 6, 7, 8, 9

    Rated power(MCR) kW/cyl 215

    Rated speed rpm 1000

    Idle speed rpm 600

    Bore mm 210

    Stroke mm 310

    Stroke/bore ratio 1.5

    Cylinder distance mm 355

    Mean piston speed m/s 10.3

    Mean eff.

    Pressure(MEP) bar 24.1

    Compression ratio 15.5

    Displacement/cylinder L 10.7

    Max.

    combustion pressure bar 200

    Fuel oil acceptance MGO, MDO, HFO

    Injection viscosity cSt Max 14

    Lubricating oil Grade SAE 40

    ISO ambient conditions Tolerance 5%

    Fuel oil with lower calorific value of 42700 kJ/kg

    Without engine-driven pumps

    Addition for engine-driven pumps

    1.5%(3g/kWh)for lubricating oil pump

    0.7%(1.4g/kWh)for each water pump

    For guidance only


    Company Contact:


    • Phone: 86-335-3212239

    • Address: A03-A07, 11F., Jinyuan International Business Bld., Qinhuangdao , China

    • Email: Email


    Published date: March 1, 2013

    • Business Description: QHD BeiFang Marine Parts& Machinery imp.

      & exp.

      Co., Ltd. Located in the

      beautiful coastal city Qinhuangdao.

      Founded on June 1990 composed

      of experienced and qualified diesel engine.

      Now the company has 103 of

      staffs and 41 technical personnel.

      Our main engine:

      Marine spare parts and material supply

      New ship building equipment contract service and ship rebuilding

      Diesel engine assembly parts and other marine equipment parts supply

      Power plant equipment supply

      Offshore oil equipment contract and service

      BFMP with many years of experience, and strong strength commit to the design and building of large and small power plant and also can provide pump station, and diesel engines, generator sets, auxiliary systems, electric systems for power plants.

      BFMP have successfully finished many contract projects of power plant and equipment supply, provides perfect after services for customers to make sure power plant running well.

      Joint with Diesel engine and generator set industries, can supply complete set of generator, spare parts and after sales serives according to users demand around the world.

      We can supply 40 7000KW, 50/60HZ, High/Medium/low pressure generator set , spare parts and consulting services.

      Our company have gained the authorization of many factories from home and abroad, and we can supply various models of engine components of the 2 Stroke and 4 Stroke engine.

      Until now, we have cooperated with many engine factories from domestic and overseas, which including the Korea STX DOOSAN, HYUNDAI, European HCP, and the domestic Henan Diesel Engine Industry Co., Ltd, Shaanxi Diesel Engine Heavy Industry Co., Ltd, Weichai Heavy Machinery Co., Ltd, ZGPT Diesel Heavy Industry Co., Ltd and Shanghai Qiyao Energy Co., Ltd etc.

      And we have developed cooperation relationships with these engine factories.

      Supply high quality parts including:

      Frame, Shaft, Cylinder head, Engine bearing;

      Crosshead, Cylinder Liner, Piston, Connecting rod;

      Water pump, Oil pump, Spacer;

      Whole set of engine components, such as tools and repair kit, etc.

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