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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 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.
Each bank of a V12 engine essentially functions as a straight-six engine, which by itself has perfect primary and secondary engine balance.A four-stroke V12 engine has even firing order at V-angles of 60, 120, or 180 degrees [1] [unreliable source] Many V12 engines use a V-angle of 60 degrees between the two banks of cylinders. [2]
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.
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.
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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.
Wonder of the Seas is powered by six marine-diesel sets: two 16-cylinder Wärtsilä 16V46D common rail engines and four 12-cylinder Wärtsilä 12V46D engines. [2] For propulsion, Wonder of the Seas uses three 20,000 kilowatt azipod main engines, which are electric thrusters. These engines are mounted under the stern of the ship and they each ...