Ammonia engine test a success
A liquid gas injection ammonia (LGIA) engine has run at 100% engine load during testing at MAN Energy Solutions’ research centre Copenhagen facility.
MAN Energy Solutions two-stroke research and development head Ole Pyndt Hansen said: “We have now operated the engine on ammonia from 25% to 100% load, marking yet another important step forward in the maritime energy transition. As such, we have now validated the ammonia fuel-injection system over the full load-curve with diesel-pilot amounts recorded according to our targets. Furthermore, the positive emission and performance characteristics from previous, single-cylinder tests have now also been validated in full-scale engine operation.”
The company states that its proprietary selective catalytic reduction (SCR) was operational at all test loads to treat exhaust gases, and that all supply and safety systems worked as intended. It also says that the next phase of testing will focus on performance and emission optimisation, including injection and SCR systems as well as control strategies.
MAN Energy Solutions global sales and promotion head Christian Ludwig highlighted the engine’s power take-off (PTO) capability and said: “The ME-LGIA concept is based on the diesel-cycle combustion principle, which makes it eminently suitable for PTO. Prior to this round of testing, we simulated PTO on the ammonia engine with very positive results and are very happy to see this replicated in real life. We intend to support PTO on the ME-LGIA to the same degree as with the other diesel-cycle engines in our low-speed portfolio.”
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