MAN Diesel & Turbo announced the development of a new MAN B&W ME-LGI dual-fuel engine on 2013. The engine expands the company’s dual-fuel portfolio, enabling the use of more sustainable fuels such as methanol, ethanol and Liquefied Petroleum Gas (LPG).

With increasing fuel prices and upcoming shipping regulations, the company identified the need to develop an engine that can enable ships to run on alternative fuels with enhanced environmental benefits. The ability of the ME-LGI engine to run on sulphur-free fuels offers great potential.

LGI_topMAN Diesel & Turbo developed the ME-LGI engine in response to interest from the shipping world in operating on alternatives to heavy fuel oil. Methanol and LPG carriers have already operated at sea for many years and many more LPG tankers are currently being built as the global LPG infrastructure grows. With a viable, convenient and economic fuel already on-board, exploiting a fraction of the cargo to power a vessel makes sense with another important factor being the benefit to the environment. MAN Diesel & Turbo has previously stated that it is already working towards a Tier-III-compatible ME-LGI version.

LGI dual-fuel engines
With the designation LGI (liquid gas injection), all ME/ME-C/ME-B engines are available for operation on low flashpoint liquid (LFL) fuels like methanol, ethanol, LPG and DME. The engines are operated as dual-fuel engines with high-pressure injection. These engines have the same fuel consumption as similar diesel engines, and the same tuning methods can be applied.