Swiss marine energy firm WinGD will realise the primary industrial instalments of its new variable compression ratio (VCR) know-how on two new dual-fuel LNG powered vessels being constructed for NYK Line.

A 95,000 DWT bulk provider being constructed at Oshima Shipbuilding and a 7,000 CEU pure automobile and truck provider (PCTC) being constructed at Shin Kurushima Dockyard would be the first two-stroke powered vessels that may dynamically optimise combustion relying on the gas getting used – delivering improved emissions, gas economic system and gas flexibility.

VCR know-how was launched in June after greater than a decade of co-development with Mitsui E&S DU (MESDU). The easy hydraulic resolution mounted on the piston crosshead represents a breakthrough in two-stroke engine design as the primary idea enabling compression ratio to be adjusted, delivering vital greenhouse gasoline emissions reductions in each diesel and gasoline modes (round 6% and three% respectively).

Running in diesel mode, this equates to a saving of round 1,555 tonnes of CO2e a yr – the equal of taking 338 typical passenger automobiles off the street for a yr, in line with US Environmental Protection Agency figures.

WinGD General Manager Application & Technical Sales, Marcel Ott, mentioned: “NYK Line has long been a valued development partner, entrusting WinGD with innovative, sustainability driven projects, including recently our first system integration project. Strong partnerships make sustainable ships, and it is fitting that this collaboration has now resulted in the first deployments of VCR, a technology that we believe can have a huge impact on performance of our X DF LNG-fuelled engines.”

The first reference, the Oshima-built bulk provider, is anticipated to be delivered in 2025. It will likely be powered by a WinGD 6X62DF-2.1 engine. The PCTC is anticipated to be delivered in 2026, powered by a WinGD 7X62DF-S2.0 engine.

The PCTC vessel will mark the primary deployment of WinGD’s new 62-bore short-stroke engine. It will even be among the many first to characteristic on-engine iCER – a compact model of the X-DF2.0 know-how that provides additional reductions in gas consumption and emissions whereas assuring Tier III NOx compliance in each gasoline and diesel modes.

VCR know-how is at present obtainable as an possibility for 62- and 72-bore X-DF engines and has no affect on engine footprint and set up necessities.