MAN clocks 100,000 hours of dual-fuel experience

'Torben Spirit' is one of four Teekay gas carriers to feature two ME-GI dual-fuel engines, running mainly on LNG 'Torben Spirit' is one of four Teekay gas carriers to feature two ME-GI dual-fuel engines, running mainly on LNG

MAN Diesel & Turbo has recorded 100,000 hours of cumulative operating experience on its dual-fuel two-strokes, taking more than 200 orders to date for the gas (ME-GI) and liquid gas (ME-LGI) injection engines.

The company, which announced that it was developing the technology in 2013, was recognised by one of its early partners in the dual-fuel project, Teekay Gas. The Teekay Corp subsidiary – which began investigating dual fuel technology in 2012 - has eight ME-GI engines on four ships (with further orders imminent). It has operated the engines in gas mode for 80% of the time.

Graham Cattley, technical manager, projects, Teekay Gas, told the annual ME-GI operators’ forum hosted by MAN last month: “The biggest benefit is the economics of the vessel; it’s got a very low fuel consumption compared to rival propulsion designs and meets emissions regulations when we’re burning gas as well as fuel oil. We also avoid the problem of methane slip, so we are very well placed for any future emission regulations.”

The engine range has continued to evolve, MAN noted, often in partnership with operators in the field; Cattley noted that post-installation improvements to pilot fuel injection had led to a saving of around one tonne of fuel per day.

As reported, Teekay recently entered into a long-term agreement with MAN after-sales division MAN PrimeServ that covers the maintenance of the ME-GI engines aboard the 173,400m3 gas carriers Oak Spirit, Creole Spirit and Torben Spirit.

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