MAN Runs Ammonia Engine at Full Load, Moving Closer to Introduction

The efforts to introduce the first commercial ammonia-fueled engines took another step closer to completion as MAN Energy Solutions has for the first time run a two-stroke engine at 100 percent engine load. The company highlights it has passed another milestone on the path to entering the commercial market, and it is slightly ahead of competitors such as WinGD which just completed single-cylinder tests.

“We began full-scale testing in November 2024 and have since proceeded in a cautious and safety-first way,” reports Ole Pyndt Hansen, Head of Two-Stroke Research & Development for MAN Energy Solutions. “We have now operated the engine on ammonia from 25 to 100 percent load, marking yet another important step forward in the maritime energy transition.”

MAN reported in 2023 that it achieved the first combustion with ammonia on the two-stroke test engine,…