Wärtsilä introduced an upgraded version of its Wärtsilä 20DF dual-fuel engine that delivers increased power output, has a reduced environmental impact, and will feature a lower fuel consumption. It will also further increase the engine’s fuel flexibility by allowing a much wider gas quality span, down to methane number (MN) 65, while still delivering full output.
The engine’s power per cylinder is increased from 185 to 195 kW, while the methane slip is lowered by as much as 40%, thereby reducing the CO2 emissions, according to the manufacturer. 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 optimize fuel consumption at low engine load, is introduced. Energy consumption is reduced by 3%.
