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WÄRTSILÄ UPGRADES SMALL-BORE DUAL FUEL ENGINE TO CUT EMISSIONS

WÄRTSILÄ UPGRADES SMALL-BORE DUAL FUEL ENGINE TO CUT EMISSIONS

Thursday, August 12, 2021 

Wärtsilä is to introduce an upgraded version of its popular and successful Wärtsilä 20DF dual-fuel engine, which will deliver increased power output, have a reduced environmental impact, and will feature a lower fuel consumption.

The upgrade will further increase the engine’s fuel flexibility by allowing a wider gas quality span, down to methane number (MN) 65, while still delivering full output. The changes means that the new version is better suited for variable speed applications with mechanical propulsion.

Power output per cylinder is increased from 185kW to 195kW, while the methane slip is lowered by as much as 40%, thereby reducing CO2 emissions. The existing Wärtsilä 20DF control system is replaced by the latest Wärtsilä UNIC all-inclusive automation system. For gen-set applications, skip-firing technology combining torque control with cylinder deactivation to optimise fuel consumption at low engine load, is introduced. Energy consumption is reduced by 3%.

Lars Anderson, Director, Product Management and Sales Support, Wärtsilä Marine Power, said: “The focus at Wärtsilä is on making every effort to support our customers by improving efficiencies, lowering operating costs, and lessening the carbon footprint of operations. This latest version of the Wärtsilä 20DF achieves all these ambitions, and is a positive move towards reducing greenhouse gas emissions.”

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