A REALLY Big LNG Engine

Winterthur Gas & Diesel (WinGD) has received type approval for what it calls the biggest and most powerful liquefied natural gas (LNG)-fueled engines ever built.

Class society Bureau Veritas awarded the approval for WinGD’s dual-fueled 12X92DF engines, which offer 63,840 kW at 80 rpm and weigh 2140 tonnes. The first series of the engine is being built by China State Shipbuilding Corp. (CSSC) and will power nine ultra-large container ships (ULCS) owned by the CMA CGM Group. These vessels will become the largest container ships powered by liquefied natural gas and represent a significant step on the path to the energy transition of the shipping industry, WinGD said.

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The type approval was awarded following a series of full-load tests in diesel and gas operation. A virtual ceremony on May 26 with guests joining from Beijing, Shanghai, Marseille, Paris and Winterthur, Switzerland, marked the moment for the new engine technology, which has brought the use of LNG as a marine fuel into an entirely new vessel sector, WinGD said.

In a statement, CMA CGM said: “The certification ceremony marks a new stage in the construction of the CMA CGM’s nine 23,000-TEU LNG-powered vessels. These vessels are the world’s largest containerships powered by LNG. CMA CGM’s ground-breaking choice in favour of LNG is a major step forward and a clear illustration of our resolute commitment to environmental protection and to the energy transition of the maritime industry. This certification is a major milestone as it marks the recognition of the technological efficiency of our dual-fuel engine project.”

Olivier Cartier, technical vice president, Bureau Veritas, said the certification process of WinGD’s 12X92DF engine was a long process due to the size and complexity of the engine.

“We mobilized our worldwide teams of engine specialists, especially in China, in France and in Germany, at each of the critical phases of the certification process, Cartier said. “ Progressive Type Approval Tests were necessary where at each test significant progress and refinement were noted, so that we remained confident that final certification at 100% of the power using gas as fuel was an achievable objective – and this has now been achieved.”

With the type approval of WinGD’s biggest engines to date, the company is opening up the possibilities of LNG-fueled ship propulsion to yet another vessel segment, a testament to its cost-efficiency, reliability, and sustainability, said Klaus Heim, WinGD CEO.

“WinGD’s X92DF engines offer the most sustainable emissions footprint currently available, outperforming expectations for NOx, SOx and PM emissions and with CO2 levels over 20% lower than typical diesel engines. With its unique combination of Otto (lean burn) and diesel cycle technology these engines can adapt for any of the potential sustainable fuels of the future making them a secure asset for a long time to come,” said Dominik Schneiter, vice president, for Research and Development at WinGD.

The development of the X92DF engine builds on the expertise and experience gained from more than 500,000 operating hours for WinGD’s X-DF dual-fuel engine technology. That landmark comes just under four years since the first engine went into service, highlighting the rapid uptake of WinGD’s low-pressure concept, the company said.

WinGD has received 320 orders for its X-DF engines, including 60 in operation. As well as the first gas-fueled ULCSs, WinGD’s low-pressure X-DF technology also powers the first LNG-fueled Aframax shuttle tankers with VOC recovery and very large crude oil carriers.

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