New Engine for Power Plants
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New Engine for Power Plants


New Engine for Power Plants

Wärtsilä Corporation introduced the new 20-cylinder 46F engine for power plant installations burning heavy fuel oil. The new engine develops 23,000 kW at 600 rpm, suitable for both 50 and 60 Hz electricity generation. It offers more power and fewer emissions than the existing 18-cylinder Wärtsilä 46 engine, while maintaining the high energy efficiency. The 20V46F engine develops 1150 kW/cylinder compared with 975 kW/cylinder from the Wärtsilä 18V46, at 600 rpm (50/60 Hz) as opposed to 500 rpm (50 Hz) and 514 rpm (60 Hz) respectively.

The Wärtsilä 46F is environmentally friendly. It has low NOx emissions, down to 710 ppm NOx at 15% oxygen. The Wärtsilä 20V46F will be able to comply with the World Bank environmental requirements, which are becoming increasingly stringent. However, as it is a known fact that reducing NOx emissions has an adverse impact on fuel consumption, the Wärtsilä 20V46F incorporates design features which enable optimizing the fuel consumption while meeting the required NOx emission levels. Additionally, the engine can minimize the fuel consumption adaptively according to prevailing ambient conditions.

Though visually similar to the original Wärtsilä 46 launched in 1987, the new Wärtsilä 20V46F engine is packed with new features including twin injection pump and scaleable control, for high performance and low exhaust emissions, regardless of fuel quality. It is ideally suited to applications which place a premium on savings in operating and maintenance costs, superior environmental performance and fuel adaptability.


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