MAN dual-fuel two-strokes rack up 2 million operating hours

Written by Nick Blenkey
Dual fuel two-stroke engine

MAN B&W 6G50MEC 96 LGIM engine

MAN Energy Solutions reports that its portfolio of two-stroke, dual-fuel engines has accumulated more than 2 million operating hours in total, running on LNG, methanol, ethane and LPG. The company has booked orders for 470 of the engines and orders and over 185 are already in service and running on these alternative fuels.

“This significant milestone owes everything to us providing the solutions demanded by the market and stands as testament to our leadership in this vital, marine segment,” said Bjarne Foldager, senior vice president and head of low-speed, MAN Energy Solutions. “Our strategy offers a clear path to decarbonization and it is evident that the increasing adoption of dual-fuel technology has become an irreversible trend.”

MAN Energy Solutions’ dual-fuel journey began in 2011 with a full-scale test of an ME-GI (-Gas Injection) engine at its Research Center Copenhagen, followed by the first delivery in 2014. The first engine tests of the ME-LGI (-Liquid Gas Injection) platform began in 2015, followed by the first sea-trial for the ME-LGIM (methanol) engine in 2016. Development of an ethane (ME-LGIE) unit followed in 2016 with sea-trials already in 2017. Currently, 12 ME-LGIP (propane) vessels are in service, while an MAN-B&W ammonia-fueled engine is due to enter the market by 2024.


“New technologies bring design and service-related challenges, which – in the case of our dual-fuel portfoliowe have carefully identified and resolved throughout the last decade,” said Peter Quaade, head of dual fuel engine group—two-stroke operations—MAN Energy Solutions. “ As a result, this is reliable, mature technology that has achieved exceptionally high running-times of more than 95% on alternative fuels, pointing to the high reliability of dual-fuel operation. Furthermore, their seamless switching between fuels, elimination of fuel-slip, and use of the Diesel combustion principle ensure that these engines can easily adapt to run on whatever fuels the industry may prefer in the future.”

The pressures on shipping to decarbonize are steadily mounting. Among them, notes MAN Energy Solutions. are reports of European politicians intending to recruit banks to help combat climate change by steering capital away from polluters. Under this scenario, banks would have to inform the ECB (European Central Bank) how their portfolios might evolve in the long-term with the ECB already having made clear that it will gradually start to treat climate as it would any other risk.

Similarly, the Global Maritime Forum is currently drafting an equivalent of its Poseidon Principles scheme for marine insurers based on a system measuring alignment with IMO decarbonization targets. This would focus on the safe and sustainable use of new marine fuels and feature a lifecycle assessment approach to greenhouse gas emissions.

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