MAN Energy Solutions reports that its MAN 7L21/31DF-M (dual fuel-methanol) genset has successfully passed its type approval test (TAT) in China. The TAT was carried out in close cooperation with MAN Energy
MAN 21/31DF-M engine
MAN Energy Solutions reports that its MAN 7L21/31DF-M (dual fuel-methanol) genset has successfully passed its type approval test (TAT) in China. The TAT was carried out in close cooperation with MAN Energy Solutions licensee CSSC Marine Power (CMP) at its production facility in Zhenjiang, and received approval from all major classification societies present at the event.
The basis for the new methanol engine concept is the MAN 21/31 Mk II type that is part-load optimized and claims a world-best specific fuel-oil consumption in the 1–2 MW range. The L21/31 engine is well-established in the market, having accumulated close to 3,000 sales over its lifetime. It burns heavy fuel oil/distillate according to the ISO8217:2024 specification, as well as biofuels.
“Integrating a methanol system into our well proven L21/31 engine has taken around two years, including some 18 months of intense testing at MAN Energy Solutions facilities,” said Michael Køel Andersen, head
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