According to MAN Energy Solutions, the ME-LGIA engine (Liquid Gas Injection Ammonia), which is currently being tested at the research center in Copenhagen, has run at 100% load for the first time.
“We started full engine tests in November 2024 and have always been prudent and primarily safety-oriented,” explains Ole Pyndt Hansen, Head of Two-Stroke Research & Development, MAN Energy Solutions. “We have operated the engine with ammonia in the load range from 25 to 100% and have taken another important step towards the maritime energy transition.”
The ammonia injection system was also tested under full load, with the diesel pilot quantities meeting the expected targets. “In addition, the positive emission values and performance data from earlier single-cylinder tests have now also been confirmed in full operation,” says Pyndt Hansen.
Next test phase: performance and emissions optimization
MAN Energy Solutions also states that its own SCR system (Selective Catalytic Reduction) worked perfectly under all test loads. All supply and safety systems also worked as planned. The next test phase will now focus on optimizing the performance and emissions of injection and SCR systems as well as control strategies.
“The ME-LGIA concept is based on the combustion principle of the diesel engine and is therefore ideally suited for power take-off,” says Christian Ludwig, Head of Global Sales & Promotion, Two-Stroke Business, MAN Energy Solutions, emphasizing the PTO (power take-off) capability of the ME-LGIA. “Prior to this test round, we had already simulated the PTO of the ammonia engine with very positive results and are very pleased that this has also been confirmed in practice. We intend to use the power take-off on the ME-LGIA to the same extent as on the other low-speed diesel engines in our portfolio.”
Carsten Lundager
