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Monday, November 29, 2021 

MAN Energy Solutions says that its four-stroke engines will be able to exploit a multitude of synthetically manufactured, climate-neutral fuels, with MAN four-stroke engines already able to use power-to-X fuels such as synthetic natural gas (SNG) for climate-neutral operation.

MAN customers will in due course be able to use other, so-called 'future fuels' – such as ammonia, methanol and hydrogen – also produced in a climate-neutral manner. While these fuels are not currently available on the market, their use in MAN units will, however, be possible through the incipient start-up of green-fuel production facilities. These, in turn, will further reduce harmful emissions and reliably meet future, stricter environmental requirements and regulations.

Marita Krems, Head of Four-Stroke Marine Engines Division, MAN Energy Solutions, said: "Green future-fuels are key to the decarbonisation of shipping. By 2050, greenhouse gas emissions in ship transport must decrease by at least 50%. We will therefore make future-proof solutions available to our customers, which will make the diversified use of green fuels possible – both for new engines and engines in the existing fleet."

The company points out that today, its engines can run on biofuels in order to reduce emissions.

Krems added: "Sustainably produced biofuels, for example those derived from waste woods, can reduce CO2 output by up to 85%. In 2022, we will offer engines that are designed for later conversion – if required – to methanol operation. From 2024, we will make solutions for the use of methanol in four-stroke engines available."

The company has its sights firmly set on the use of ammonia.

Krems said: "In container ships with a two-stroke engine, ammonia will certainly play a decisive role and such an engine will be available from 2024. When it comes to the four-stroke segment, we have already discussed the relevance of this fuel in great detail with our customers. Cruise ships or ferries, for example, are basically floating cities and have especially high safety standards. Here, we only see options for ammonia’s use if initial, positive operating experiences have been gathered in other segments. As soon as there is a demand for an ammonia solution, we will be ready. With our two-stroke engines, we are the pioneers when it comes to ammonia and we have the necessary, developmental competence. Together with partners – as part of the ‘AmmoniaMot’ research project – we have already defined the steps necessary for the development of a four-stroke, multi-fuel engine that can also operate on ammonia. As soon as relevant fields of application emerge, we will be able to handle them."

MAN Energy Solutions says it continues to follow the concept it has built up over several generations.

Bernd Siebert, Head of Four-Stroke Retrofitting, MAN PrimeServ, said: "In addition to new engines, we are also always thinking in terms of retrofitting the existing fleet. Ships have a lifetime of several decades. After retrofitting, engines already in the field have the same capabilities as our new engines. This is how we safeguard, not only the climate, but also our customers’ investment."

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