WinGD System / Package
WinGD X-DF Dual-Fuel LNG Engines
WinGD X-DF low-pressure (Otto cycle) and X-DF-HP high-pressure (Diesel cycle) dual-fuel two-stroke engines running on LNG, with X-DF2.0 technologies to cut fuel consumption and methane slip.
Description
WinGD's X-DF dual-fuel two-stroke engines run on liquefied natural gas or conventional fuel. Fossil LNG gives an immediate 15–20% reduction in greenhouse gas emissions, and blending or replacing it with synthetic or bio-LNG reduces emissions further without engine modification. WinGD has had LNG engines in operation since 2016.
Engine concepts
- X-DF (low-pressure, Otto cycle): LNG is admitted at low pressure before compression and ignited by a high-pressure pilot fuel injection, giving lean-burn combustion with lower temperatures and emissions. Low-cost, efficient fuel injection concept suited to most vessel applications.
- X-DF-HP (high-pressure, Diesel cycle): LNG is injected directly into the cylinder at very high pressure alongside a small pilot quantity, for robust combustion and high efficiency. Aimed at the highest power demands such as ultra large container vessels, VLCCs and very large ore carriers.
X-DF2.0 technologies
- Reduced fuel consumption and methane slip in gas mode
- iCER (Intelligent Control by Exhaust Recycling) is the first X-DF2.0 application
- X72DF-2.2 designed for LNG carriers
Key benefits
- Lower operating costs
- Reduced methane slip and CO2 emissions
- Proven design for reliability and safety
Applications
Tankers, container vessels, bulk carriers, multipurpose vessels, gas carriers and PCTCs.
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