Wednesday, June 3, 2015

  Most efficient four-stroke diesel engine: Wärtsilä 31 engine breaks Guinness World Records record (VIDEO)

   HELSINKI, Finland -- The recently launched Wärtsilä 31 engine has achieved a World Record title for the most efficient four-stroke diesel engine; the listing is based on the Wärtsilä 31 engine's highest fuel efficiency levels, with its diesel fuel consumption being as low as 165 g/kWh, according to the World Record Academy.

  Photo: The Wärtsilä 31 is the first of a new generation of medium speed engines, designed to set a new benchmark in efficiency and overall emissions performance. The launch of the Wärtsilä 31 introduces a 4-stroke engine having the best fuel economy of any engine in its class. Photo: Wärtsilä (enlarge photo)

  The Guinness World Records' record for the Largest marine engine, set by The Wärtsilä RT-flex96C which is a turbocharged, two-stroke reciprocating diesel engine designed to power large container ships and is the world's largest engine. Built in the Aioi Works of Japan's Diesel United, Ltd, it has a length of 27 metres (88 ft 7 in), is 13.5 metres (44 ft 4 in) high and weighs over 2,300 tonnes. Using improved fuel injection methods, which have done away with traditional camshaft, chain gear, fuel pumps and hydraulic actuators, the power output of the 14 cylinder version has, in 2008, attained 84.42 Megawatts (114,800 bhp [brake horsepower]).

  Guinness World Records also recognized the world record for the most powerful fighter jet engine; it is the US aircraft engine manufacturer, Pratt and Whitney's engine for the F-35 Lighting II Joint Strike Fighter (JSF). Whilst its published power is rated at 28,800 lb thrust (128.1 kN) in intermediate power and 43,010 lb thrust (191.3 kN) in maximum power, on 18 September 2006, it set a record for thrust from a fighter engine reaching more than 40,000 lb thrust (178 kN). NB, it is normal to quote engine power in lb thrust (hence metric in brackets).

    The Wärtsilä 31 engine is designed to serve various types of vessels in the offshore, cruise and ferry, and other marine segments where the power range requirement is from 4.2 to 9.8 MW.

    The engine can be operated using a range of different fuels, and comes in three alternative versions; Diesel, Dual-Fuel (DF) and Spark-Ignited Gas (SG).

    The multi-fuel capabilities that the Wärtsilä 31 brings to the market extend the possibilities for operators to utilize different qualities of fuels, from very light to very heavy diesel, and a range of different qualities of gas.

    Roger Holm, Senior Vice President, Engines, Wärtsilä Ship Power, said, "The marine industry is focusing more than ever on efficiency and flexibility.

    "The validation of the Wärtsilä 31 as being the most efficient four-stroke diesel engine in the world speaks for itself. Ship owners and operators now have the chance to take a more efficient approach to improving vessel operations and reducing costs. The Wärtsilä 31 clearly redefines efficiency."

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