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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 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.
Wärtsilä Marine (Finnish: Wärtsilä Meriteollisuus; Swedish: Wärtsilä Marinindustri) was a Finnish shipbuilding company. The company was created in 1987 in order to improve shipbuilding productivity by combining the Wärtsilä and Valmet yards under the same organisation.
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.
ALCO 18-251 V18 engine used as a backup generator at a wastewater plant in Montreal. The inline-6 designs of 800 hp (597 kW) version of the 251 engine replaced the 539 engine in 1954 in Alco's low-end line of power generation packages. The 244 engine was still used in higher-end power generation packages until it too was replaced by 251-engined ...
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