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In 2013, WinGD introduced the X-DF engine series. Dual-fuel engines, using gas admitted at low pressure and ignited by a low volume of liquid pilot fuel was a breakthrough in the marine industry. The X-DF engines offer new marine standards with low-pressure gas technology.
Low-pressure X-DF technology is based on the lean-burn Otto-cycle combustion principle, in which fuel and air are premixed and burned at a relatively high air-to-fuel ratio; a concept already used widely on medium-speed engines.
WinGD has applied a depth of gas engine expertise and experience to its low-speed engines – a move that extends the benefits of DF technology across the broader marine industry. To date, this technology has proven effective and numerous orders have been placed for a variety of vessel types, including large and small LNG carriers, container vessels and tankers.
The X-DF principle with gas admission (left) Emission reduction examples – switching to gas and ignition (right)
The low-pressure X-DF engines provide the following benefits: