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MAN is preparing the four-stroke for future green fuels

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Logbook staff

By continuously expanding the range of services for its four-stroke engine portfolio, MAN Energy Solutions enables its customers to exploit a range of future synthetic and climate neutral fuels. Already today, MAN engines using Power-to-X fuels such as synthetic natural gas (SNG) can operate with total climate neutrality.

MAN customers will eventually be able to use other “fuels of the future”, such as ammonia, methanol and hydrogen, which are also produced in a climate neutral manner. Although these fuels are not currently available on the market, their use in MAN units will be possible as the green starter fuel production facilities are brought into service.

“Future green fuels are essential for decarbonizing shipping,” said Marita Krems, head of the four-stroke marine engines division at MAN Energy Solutions. “By 2050, greenhouse gas emissions from maritime transport must decrease by at least 50%. We will therefore provide our customers with solutions for the future, which will make possible the diversified use of green fuels, both for new engines and engines in the existing fleet.

Already, MAN customers can fall back on using biofuels as fuel for ships to reduce emissions.

Biofuels

“Sustainably produced biofuels, for example those derived from wood waste, can reduce CO2 production by up to 85%,” Krems said. “In 2022, we will offer engines designed for later conversion, if necessary, to running on methanol. From 2024, we will provide solutions for the use of methanol in four-stroke engines.

The company is also firmly targeting the use of ammonia.

“In two-stroke engine container ships, ammonia will certainly play a key role and such an engine will be available from 2024,” says Krems. “Regarding the four-stroke segment, we have already discussed the suitability of this fuel in detail with our customers. Cruise ships or ferries, for example, are essentially floating cities and have particularly high safety standards. Here we only see options for the use of ammonia if the first positive operating experiences have been collected in other segments.

Ammonia

“As soon as there is a demand for an ammonia solution, we’ll be ready,” Krems said. “With our two-stroke engines, we are the ammonia pioneers and we have the necessary development skills. With partners – as part of the “AmmoniaMot” research project – we have already defined the necessary steps for the development of a four-stroke multi-fuel engine that can also run on ammonia. As soon as relevant application areas emerge, we can address them.

“In addition to the new engines, we are also always thinking about modernizing the existing fleet,” said Bernd Siebert, head of four-stroke modernization at MAN PrimeServ, the aftermarket brand of MAN Energy Solutions. “Ships have a lifespan of several decades. After the modernization, the engines already in the field have the same capacities as our new engines. This is how we protect not only the climate, but also our clients’ investments.

Categories: Engines and fuel, Environment, News, Maritime transport, Technology
Key words: ammonia, biofuel, decarbonization, four-stroke engine, future fuels, MAN Energy Solutions, marine fuel, methanol, marine transportation emissions


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