瓦锡兰46DF发动机

适用于LNG运输船、邮轮、滚装货船/客船、渡轮、大型近海装置的最佳的原动机解决方案。

瓦锡兰46DF发动机是一款四冲程双燃料发动机,可以燃用天然气、重油(HFO)或船用柴油(MDO)运行。

发动机可以平稳地从天然气燃料切换到HFO/MDO模式,反之亦然,功率和转速保持稳定。瓦锡兰46DF发动机的设计基于成熟可靠的瓦锡兰46F和瓦锡兰50DF发动机系列,二者自21世纪初以来在市场上大获成功。这两个系列的发动机都具有出色的业绩,共有超过800台发动机在服役之中,让瓦锡兰领先的DF技术累积了超过1100万小时的运行经验。

瓦锡兰46DF发动机扩大了瓦锡兰双燃料发动机系列阵容,覆盖从6.2兆瓦到18.3兆瓦的功率范围,转速为600rpm。

   
 
    Advantages

    The Wärtsilä 46DF is available with a choice of two performance criteria, depending on the application and customer requirements. The prime mover machinery can be optimized for either:

    • Power - to produce the best available power per weight ratio in its class
    • Efficiency - to give outstanding fuel energy consumption performance across the entire operating range regardless of the fuel mode selected

    Wärtsilä 46DF

    • Cylinder bore 460 mm
    • Piston stroke 580 mm
    • Cylinder output 1045/1145 kW/cyl
    • Engine speed 600 rpm
    • Mean effective pressure 21.7, 23.8 bar

    Key benefits

    • IMO Tier III Compliant
    • Lowest gas fuel consumption in the industry
    • Lowest fuel oil consumption in the industry
    • Most powerful 4-stroke gas engine on the market
    • Fuel flexibility
    • Proven and reliable dual-fuel technology
    • Long overhaul intervals
    • Low exhaust gas emissions
    • Low gas feed pressure
    • Embedded automation system

    Fuel flexibility

    Wärtsilä’s proven dual-fuel technology enables owners and operators to choose both gas and liquid fuel, and switch between the two according to cost, availability, and local environmental regulations.

    The switch between fuel types is made without loss of power or speed. The engine automation adapts automatically to the relevant fuel selection, both in normal and emergency modes.

    In gas mode, the natural gas is fed to the engine at low pressure. This facilitates a simpler and space saving engine room configuration, while providing easier and faster maintenance activities.

    The engine’s gas piping is double-walled as standard, and the advanced integrated automation system enables enhanced safety and local monitoring. This leads to safer and more reliable operations, under all conditions.The complete built-in automation minimizes the need for external controls, thus saving engine control room space.

    Technical data
    Wärtsilä 46DF IMO Tier III
    Cylinder bore 460mm Fuel specification:
    Piston stroke 580 mm Fuel oil 700 cSt/50°C
    Cylinder 1145 kW/cyl 7200 sR1/100°F
    Speed 600 rpm ISO 8217, ISO-F-DMX, DMA & DMB
    Mean effective pressure 23.8 bar BSEC 7490 kJ/kWh at ISO cond.
    BSGC 7450 kJ/kWh at ISO cond.
    Piston speed 11.6 m/s  

    Dimensions (mm) and weights (tonnes)
    Engine type A* A B C D F Weight
    6L46DF 8 670 8 953  3 255 3 185 3 750 1 430 102
    7L46DF 9 635 9 773  3 255 3 185 3 750 1 430 118
    8L46DF 10 310 10 590 3 445 3 185 3 750 1 430 130
    9L46DF 11 130 11 413 3 445 3 185 3 750 1 430 146
    12V46DF 11 120 10 350 3 670 4 555 3 800 1 620 184
    14V46DF 12 170 11 400 3 670 4 555 3 800 1 620 223
    16V46DF 13 450 12 700 3 860 5 174 3 800 1 620 235

    46df


    Rated power
    Engine type 1145 kW/cyl
    6L46DF 6 870
    7L46DF 8 015
    8L46DF 9 160
    9L46DF 10 305
    12V46DF 13 740
    14V46DF 16 030
    16V46DF 18 320

    Applications

    The Wärtsilä 46DF is designed for a broad range of marine applications. Thanks to its fuel flexibility and the modular, compact design, the engine can be optimized for constant speed diesel electric operation. It also meets the need for direct drive main engine propulsion, operating at either constant speed or along a combinator curve. The multi-fuel operation capability offers new machinery opportunities for various vessel applications.

    Methane Number

    Wärtsilä Methane Number Calculator

    We have developed this tool for ship owners and operators to calculate the Methane Number of the fuel gas.
    The calculation result indicates whether or not the given gas quality is suitable for use in Wärtsilä dual-fuel engines.

    Methane CH4
    mol%
    EthaneC2H6
    mol%
    PropaneC3H8
    mol%
    Iso-butane (2-Methylpropane)i-C4H10
    mol%
    N-butanen-C4H10
    mol%
    Iso-pentane (2-Methylbutane)i-C5H12
    mol%
    N-pentanen-C5H12
    mol%
    EthyleneC2H4
    mol%
    PropyleneC3H6
    mol%
    Neo-pentane (2,2-Dimethylpropane) neo-C5H12
    mol%
    Mix-hexaneMix C6H14
    mol%
    Mix-heptaneMix C7H16
    mol%
    N-Octanen-C8H18
    mol%
    Carbondioxide C02
    mol%
    CarbonmonoxideC0
    mol%
    HydrogenH2
    mol%
    Nitrogen N2
    mol%
    Hydrogen sulfideH2S
    mol%
    Total mol%
    Wärtsilä Methane number (WMN)
    Propane Knock Index (PKI)
    The calculation tool is owned by Wärtsilä and is made for customer use and is for guidance only. Changes in the tool is reserved at any time.

    Product hologram

    Press releases

    Articles

    LNG Propulsion achieves the next step...

    With the introduction of the Wärtsilä 46DF dual-fuel engine, the traditional design principles for LNG-powered...
    2014-10-22
    • Twentyfour7. article

    The Wärtsilä Gas Valve Unit Enclosed...

    Wärtsilä’s dual-fuel engine technology is...
    2013-05-17
    • In Detail article

    Taking dual-fuel marine engines to the...

    Wärtsilä’s new 46DF engine represents a significant addition to the company’s existing range of dual-fuel...
    2014-07-02
    • Twentyfour7. article

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