New Small-bore Two-stroke Diesel Introduced by MAN

Press Release
Tuesday, September 04, 2012

MAN Diesel & Turbo introduces new small-bore two-stroke, updates designs of ME-B & G series engines.

MAN Diesel & Turbo’s updated engine programme features several, positive changes to its two-stroke marine segment. The most significant of these is to the ME-B and G portfolios that are increasingly finding favour in the coastal & river segment in major markets such as China, Japan and Russia, and in container traffic, respectively.


The programme introduces an entirely new engine – the S30ME-B9 type, which joins the existing 35, 40-, 46-, 50- and 60-cm models in the small-bore ME-B family. The economical ME-B design utilises a camshaft-operated exhaust valve and an electronically controlled fuel-injection system designed to meet Tier-II emission requirements.


All ME-B engines in the updated programme can boast of improved SFOC figures compared to earlier versions owing to the introduction of variable exhaust valve timing in response to market demand. This improved control of the exhaust valve reduces fuel-oil consumption at part-load operation.


G-type engines

G-engines are hallmarked by their ability to accommodate larger, more efficient propellers with lower speeds. They have the lowest available SFOCs for energy efficiency and, of course, meet all Tier II criteria. The G40 and G45 types are the newest members of this family that was originally introduced in 2010 and represents another important step towards a lower EEDI. G-series engines are ‘green’ engines with an ultra-long stroke that reduces engine speed, thereby paving the way for ship designs with unprecedented high propulsion efficiency. Already, more than 50 sets of G-type engines are on order, with the G80 the frontrunner in about half of them.



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