MAN Diesel and Turbo’s Diesel Research



  • MAN Diesel & Turbo’s Diesel Research center successfully demonstrated the ME-LGI concept in front of the existing ME-LGI customers and partners on March 17,2015 in Copenhagen.
  • The company rebuilt its 50 MX test engine to an ME-LGI unit for the purpose of the event.
  • “Attendees showed great interest in the demonstration and the accompanying technical presentations; their feedback has been very positive.A number of years ago we identified the need to develop an engine that could run on more environmentally-friendly, competitively-priced fuels as an alternative to MDO/MGO.”revealed by Vice President and Head of R&D, Søren H. Jensen.
  • He continued“We believe the ability of the ME-LGI engine to run on sulfur-free fuels offers great potential. Methanol carriers have already operated at sea for many years. With a viable, convenient and economic fuel already on-board, exploiting a fraction of the cargo to power a vessel makes sense.”


  • MAN Diesel & Turbo has received orders for 7 × ME-LGI engines – a mixture of 7S50ME-LGI and 6G50ME-LGI variants – from Mitsui O.S.K. Lines, Marinvest and Westfal-Larsen.


  • Mitsui Engineering & Shipbuilding Co., Ltd will produce the very first engine for a vessel currently under construction by Minaminippon Shipbuilding Co., Ltd. for Mitsui O.S.K. Lines, Ltd.
  • MAN Diesel & Turbo has previously stated that it is already working towards a Tier-III-compatible ME-LGI version that can meet IMO NOx limits with the aid of secondary measures.


  • Methanol as a ship fuel is interesting for ship operators because it does not contain sulphur and is liquid in ambient air conditions, which makes it easy to store aboard ships.
  • For the Ships operating in IMO Emission Control Areas,methanol is a solution to the demands of sulphur-emission legislation.
  • A further advantage of methanol is its ability to be stored in normal, unpressurised tanks, making it straightforward to transport.
  • Delivery by train, truck and/or ship is already in place in many areas globally, establishing and expanding the existing methanol infrastructure is perfectly feasible, even for individual ships operating in remote areas.
  • The ME-GI engine where fuel is injected in its gaseous phase, the MAN B&W ME-LGI engine is the dual-fuel solution for low-flashpoint liquid fuels.
  • The ME-LGI design successfully overcomes the challenge of lowcetane- number fuels – such as methanol – whose self-ignition quality is characteristically poor, using the well-known ME-GI principle of pilot injection of MGO or HFO.
  • The ME-LGI’s operation principle and safety concept are similar to those of the already accepted ME-GI concept.
  • Fuel injection is accomplished by a Fuel Booster Injection Valve (FBIV), using 300 bar of hydraulic power to raise the fuel pressure to an injection pressure of some 600 bar.


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