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The engine models are identified by the cylinder bore diameter in centimeters, which as of 2024 range from 20 to 46 centimetres (7.9 to 18.1 inches). The smallest engine series, Wärtsilä 20, produces a modest 200 to 220 kW (270 to 300 hp) per cylinder and is available in inline configurations from 4 to 9 cylinders.
The engine is the largest reciprocating engine in the world. The 14-cylinder version first entered commercial service in September 2006 aboard the Emma Mærsk . The design is similar to the older RTA96C engine, but with common rail technology (in place of traditional camshaft , chain gear , fuel pump and hydraulic actuator systems).
The engines were used to provide electrical power for both propulsion and auxiliary services. Due to their ability to run on heavy fuel oil (HFO) or MDO (Marine Diesel Oil), many ships were equipped with the Vasa series engines. In the power generation industry, these engines are used as auxiliary generators or as backup power generators. [5]
The only straight-14 engine known to reach production is part of the Wärtsilä-Sulzer RTA96-C family of 6-cylinder to 14-cylinder two-stroke marine engines. This engine is used in the Emma Mærsk, which was the world's largest container ship when it was built in 2006.
Download as PDF; Printable version; ... Pages in category "Engine components" ... Component parts of internal combustion engines; Engine control unit; Cooler (oil) ...
An illustration of several key components in a typical four-stroke engine. For a four-stroke engine, key parts of the engine include the crankshaft (purple), connecting rod (orange), one or more camshafts (red and blue), and valves. For a two-stroke engine, there may simply be an exhaust outlet and fuel inlet instead of a valve system.
Cummins and Wärtsilä Diesel agreed about setting up a joint venture to produce engines which would cover the gap in the engine ranges between both companies. The companies signed a letter of intent for the foundation of Cummins-Wärtsilä in December 1994. The ownership was shared 50% / 50% between Cummins and Wärtsilä Diesel.
The first Azipod unit, installed on the Finnish fairway support vessel Seili in 1990, is now displayed at the Forum Marinum maritime museum in Turku, Finland.. In 1987, the Finnish National Board of Navigation made a co-operation proposal to the electrical equipment company Strömberg (later ABB) and the Finnish shipbuilder Wärtsilä Marine for the development of a new type of electric ...