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MAN Diesel & Turbo Adds Further Bore Sizes To Ultra-Long-Stroke Engine Program

Posted on May 31, 2011

Following the introduction of its G80ME-C9 engine in October 2010, MAN Diesel & Turbo has announced the addition of further bore sizes to its ultra-long-stroke engine program. The updated engine program has supplemented the original G-type engine with G70ME-C9, G60ME-C9 and G50ME-B9 engines.

The G-types have designs that follow the principles of the large-bore Mk-9 engine series that MAN Diesel & Turbo introduced in 2006. Their longer stroke reduces engine speed, paving the way for ship designs with high efficiency, the company said.

Tankers and bulk carriers have traditionally used MAN B&W S-type engines with their long stroke and low engine-speed as prime-movers, while larger container vessels have tended to use the shorter-stroke K-type with its higher engine speed. Following efficiency optimization trends in the market, MAN Diesel & Turbo has also thoroughly evaluated the possibility of using even larger propellers and thereby engines with even lower speeds for the propulsion of tankers and bulk carriers.

Final drawings for the structure, moving parts and fuel equipment of the first G-type – the G80ME-C9 – are scheduled for delivery by the middle of this year, with piping and gallery drawings scheduled to follow in the latter part of 2011, depending on order dates.

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