“Wärtsilä has been a pioneer in developing the technology that enables LNG carriers to utilize gas as a fuel, and the technical strength of this system has provided considerable added value for our customers. Chinese owners are beginning to invest significantly in carriers powered by dual-fuel engines, and these latest orders will add impetus to the market, both in China and globally,” said Aaron Bresnahan, Vice President Sales, Wärtsilä Ship Power.
The 50DF engine is manufactured in various configurations from a 6-cylinder in-line version to an 18-cylinder version in V-configuration, giving 950/975 kW per cylinder and a total maximum mechanical output of 17,100 kW. The engine speed is 500 or 514 rpm with 50Hz and 60 Hz applications. When operating in gas mode, the nitrogen oxide (NOx) emissions are at least 85 percent below those specified in the current IMO regulations, and CO2 emissions are some 25 percent less than those of a conventional marine engine running on diesel fuel. Additionally, the sulphur oxide (SOx) and particle emissions are negligible at almost zero percent.