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Demand for two-stroke engines that can run on green methanol continues to grow, with around 170 dual-
fuel engines in use or on the order books for the next few years. According to Bjarne Foldager, Head of Two-Stroke, 
the portfolio has been expanded to include virtually the 
entire engine program in order to keep up with demand: 
“At Research Centre Copenhagen, we’re already conducting combustion tests with ammonia engines. It’s anticipated that the first engine will be delivered by Mitsui at the end of 2024. And we’ve already initiated strategic orders with partners in Japan, South Korea and China.” The two-stroke team is also focusing on the development of digital solutions. The Asset+ program ensures that our customers have access to the latest products, such as synchrophasing to reduce engine vibration and automatic cylinder control to optimize fuel consumption. Technology is just one part of the picture, however. In view of increasing market requirements, the entire two-stroke business is, according to Bjarne Foldager, focused on developing ‘value chain resilience’.

Methanol leads the way for four-stroke engines too

Power plant and marine customers are already asking for four-stroke engines when it comes to future fuels that will future-proof their investments. Methanol, ammonia and hydrogen carry the highest hopes. In the case of shipping, we already offer dual-fuel engines that can be converted to methanol (CH40) if required. The 21/31 and 51/60RDFM engine types will be the first intended for use with methanol only. The 32/44, 49/60 and 175D, which are in development, will follow. Alexander Knafl, Head of R&D Engineering Four-Stroke, describes the research projects in which MAN Energy Solutions is active: “In the case of ammonia (NH3), we’re taking part in the ‘AmmoniaMot’ research project, which is evaluating various combustion processes. The use of NH3 in power plant engines is also gaining interest. In addition, our power plant engines can already be operated with the admixture of 25 percent hydrogen (H2). The goal is 100 percent, of course. We’re doing research to this end together with other companies and universities as part of the HydroPoLEn project.”  The volume in which the new fuels can be produced and made available on the market will be crucial.

At Research Centre Copenhagen, we’re already conducting combustion tests with ammonia engines. It’s anticipated that the first engine will be delivered by Mitsui at the end of 2024.

Bjarne Foldager,
Head of Two-Stroke Business

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In the case of ammonia (NH3), we’re taking part in the ‘AmmoniaMot’ research project. With regard to hydrogen we’re doing research to this end together with other companies and universities as part of the HydroPoLEn project.

Alexander Knafl,
Head of R&D Engineering Four-Stroke

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