World's first test operation of large-bore low-speed ammonia dual fuel engine and ammonia fuel supply system commercial unit starts

MITSUI E&S Co., Ltd. announced that the test operation of the MITSUI-MAN B&W 7S60ME-C10.5-LGIA-HPSCR large-bore low-speed ammonia dual fuel engine started at its Tamano Factory. The project builds on R&D work by their licensor, MAN Energy Solutions (MAN ES), that has taken a strong position by running both single-cylinder and full-engine ammonia-fuelled tests at its Copenhagen-based two-stroke research centre.

And the prototype test at Tamano is the world's first test run with an ammonia fuel on a large-bore, low-speed, two-stroke commercial engine.
In addition, the development of peripheral equipment other than engine is being carried out with the support of the New Energy and Industrial Technology Development Organization (NEDO) as a part of "Integrated project for development and social implementation of ammonia fuelled ships", and during this test run, the verification of the safety and performance of the ammonia fuel supply system and other peripheral systems developed by MITSUI E&S will also be carried out.

Maximum continuous output of the tested engine: 17,430 kW (23,700 BHP) x 105 rpm (7 cyl., L1 point)

Feb 12 2025