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DUAL-FUEL ENGINES - 4 Pages

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Catalogue excerpts

DUAL-FUEL ENGINES - WARTSILA 20DF, 34DF, 46DF AND 50DF The Wartsila dual-fuel engine is the ultimate ‘fuel flexibility' solution. It is a four-stroke engine that runs on light fuel oil (LFO) or heavy fuel oil (HFO), and can switch over from gas to LFO/HFO and vice versa smoothly during engine operation. The Wartsila dual-fuel engines are available in power range from 0.9-18.3 MW having speed range from 500-1200 rpm. KEY BENEFITS OF WARTSILA DF-ENGINES: • Fuel flexibility • Application flexibility • Proven and reliable dual-fuel technology • Long overhaul intervals • Low exhaust gas emissions • Fuel economy over the entire engine operation range • Low gas feed pressure • Embedded automation system TECHNOLOGY AND OPERATION ADVANTAGES The Wartsila dual-fuel engines are four-stroke power converters that can be run on natural gas, marine diesel oil (MDO) or heavy fuel oil (HFO). One of the main features of the proven and reliable dual-fuel technology is that the engine can be switched from fuel oil to gas operation and vice versa smoothly during engine operation. During switchover the fuel oil is gradually substituted by gas. In the event of for instance a gas supply interruption, the engine converts from gas to fuel oil operation at any load instantaneously and automatically. Furthermore, the separate liquid fuel system makes it possible to switch over from MDO to HFO and vice versa without power interruption. The pilot fuel is in operation during HFO operation to ensure nozzle cooling. The fuel switch from liquid to gas operation mode can be made on operator's command. This operation flexibility is a real advantage with the dual-fuel system. The natural gas is supplied to the engine through a gas valve unit, where the gas is filtered and gas pressure is controlled. The system includes 4? WARTSILA

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the necessary shut-off and venting valves to ensure safe and trouble free low pressure gas supply. On the engine, the gas is supplied through a large common-rail pipe running along the engine. Each cylinder then has an individual feed pipe to the gas admission valve on the cylinder head. Gas piping is of double wall design as standard. When running the engine in gas mode, the air / gas mixture is ignited with a small quantity of MDO pilot fuel, less than 1% of full-load fuel consumption. The amount of pilot fuel is optimised for best combustion by the embedded engine speed & load control and monitoring...

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in the mid of 1990s. Wärtsilä 34DF covers the middle part of the power range in the dualfuel Wärtsilä engine family. Available cylinder configurations are 6, 8 and 9 in-line, and 12 and 16 Vee- configurations covering the power range from 2.8 MW to 8.0 MW. Speed range is 720–750 rpm for use with 50 or 60 Hz applications. Thanks to very wide power range the Wärtsilä 34DF fits for a various different vessel types mounted as prime mover in mechanical propulsion as well as generating set applications. WÄRTSILÄ 46DF The Wärtsilä 46DF is a four-stroke dual-fuel engine that can be run on natural gas,...

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WARTSILA® is a registered trademark. Copyright © 2015 Wartsila Corporation.

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All Wärtsilä Corporation catalogues and brochures

  1. Wärtsilä 31

    4 Pages

    En
  2. Wärtsilä 26

    12 Pages

    En
  3. Wärtsilä 20

    2 Pages

    En
  4. Wärtsilä 50DF

    2 Pages

    En
  5. Wärtsilä 46DF

    2 Pages

    En
  6. Wärtsilä 34DF

    2 Pages

    En
  7. Wärtsilä 20DF

    2 Pages

    En
  8. Wärtsilä 3C

    8 Pages

    En
  9. PROPULSION SYSTEMS

    16 Pages

    En
  10. Xvintage

    13 Pages

    En
  11. IMC ferries

    4 Pages

    En
  12. Wartsila-O-E-W-MS

    20 Pages

    En

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  2. Auxpac

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  3. 50DF

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  4. 26-46 Series

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  5. 20 Series

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  6. RT-flex58T

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  7. RT-flex60C

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  9. RT-flex82C

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  10. RT-flex82T

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