LNG
LNG
Liquefied Natural Gas
A lower carbon fuel with significantly lower air pollution and potential for carbon-neutral production.
Using WinGD’s dual-fuel X-DF engines gives operators flexibility in reducing emissions.
Fossil LNG offers an immediate 15-20% reduction in greenhouse gas emissions. By blending or replacing fossil LNG with carbon-neutral synthetic or bio-LNG, operators can reduce their emissions further without modification.
For most vessel applications, the low-cost, highly efficient and reliable fuel injection concept used by WinGD’s low-pressure dual-fuel LNG engines offer several advantages over other dual-fuel engine concepts.
For vessels with the highest power demands – including ultra large container vessels, very large crude carriers and very large ore carriers – the Diesel cycle, high-pressure X-DF-HP delivers the power density and ease of integration needed to outperform all other engine concepts on cost and emissions.
Let's talk LNG
What are low-pressure and high-pressure dual-fuel LNG engines?
Dual-fuel LNG engines are designed around two different combustion concepts: the Diesel cycle and the Otto cycle. The key distinction lies in how LNG is introduced into the cylinder and how combustion is initiated.
Otto cycle (low-pressure admission)
Low-pressure dual-fuel engines operate on a lean-burn Otto cycle.
In this concept, LNG is admitted to the combustion chamber at low pressure before piston compression begins. Combustion is then initiated by a high-pressure injection of pilot fuel, resulting in lower combustion temperatures and reduced emissions.
Diesel cycle (high-pressure injection)
High-pressure dual-fuel engines follow the same combustion principle as conventional low-speed diesel engines.
LNG is injected directly into the combustion chamber at very high pressure, alongside a small amount of pilot fuel. The pilot fuel ignites the gas, enabling robust combustion and high efficiency across a wide operating range.
Cutting-edge performance improvements for X-DF LNG engines
WinGD continues to improve the marine market’s most well-established low-pressure dual-fuel LNG engines with the addition of new X-DF2.0 technologies, delivering greater efficiency, improved emissions compliance and increased operational flexibility.
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Read more about X-DF2.0 technologies
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Lower
operating costs
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Reduced
Methane slip and CO2 emissions
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Proven
design for reliability and safety
Vessels this fuel is appropriate for
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Tanker
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Container Vessel
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Bulk Carrier
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Multipurpose Vessel
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Gas Carrier
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PCTC
Featured LNG solutions
X72DF-2.2
Designed to meet the needs of LNG carriers
WinGD’s low-pressure dual-fuel technology is a sustainable propulsion solution that runs safely, reliably and efficiently on gas as a cleaner option over conventional heavy fuel oil or diesel oil. Further optimising the standard X-DF portfolio, WinGD now offers X-DF2.0 technology providing reductions to both fuel consumption and methane slip in gas mode. iCER – the Intelligent Control by Exhaust Recycling system, is the first application of X-DF2.0.
Featured fuel flexibility news
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WinGD expands X-DF-A segment reach with AET’s first ammonia aframax order
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WinGD to supply methanol-fuelled engines for six green container vessels
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WinGD enhances fuel-flexible efficiency with Variable Compression Ratio
Find out moreRead more about our fuel options
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BrochuresWinGD LNG - FAQ Booklet
12 February 2025
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BrochuresX-DF FAQ Brochure
05 March 2024
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BrochuresWinGD Ammonia - FAQ Booklet
12 February 2024
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