MAN paves the way for methanol adoption with new engine approval

German engine Manufacturer MAN Energy Solutions (MAN ES) continues to develop methanol-compatible engines for the marine industry to meet the growing demand for methanol as one of the marine fuels of the future.

The company obtained a type approval certificate for its four-stroke engine 32/44CR DNV medium speed marine engine.

“The maritime industry needs everyone on deck as we work to decarbonise and DNV is proud to be associated with great partners like MAN who are driving the transition,” DNV said on the occasion.

The engine uses electronic fuel injection, high-output turbochargers, electronic hardware and variable valve timing, resulting in low emissions, high efficiency and high specific power, according to its developer. MAN said earlier that it plans to make solutions available for using methanol in four-stroke engines from 2024.

Four-stroke engines mainly equip container ships, ferries, fishing or cruise ships, as well as offshore solutions.

MAN has been chosen to supply eight dual-fuel methanol engines for Maersk’s new container ships and these will be the largest methanol combustion engines ever built.

The B&W 8G95ME engines with Liquid Gas Methanol Injection (LGIM) will be based on their 50-bore counterpart, which has accumulated more than 100,000 hours of methanol running time.

It is a two-stroke, dual-fuel engine that can run on methanol as well as conventional fuels. In the future, MAN plans to allow them to burn bio-methanol as well as e-methanol.

Methanol generates less NOx emissions and no SOx or soot emissions during combustion. It is much easier to handle than gaseous fuels and less hazardous to aquatic organisms than marine gas oil or heavy fuel oil. According to MAN, the main challenges lie in the fuel system and injection technology as well as in the optimization of combustion.

MAN Energy Solutions also presented the launch of its engine type MAN 49/60DF at the SMM fair in Hamburg. The dual-fuel four-stroke engine is capable of running on LNG, diesel and HFO as well as biofuel blends and synthetic natural gas.

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