The world's first 45-centimetre bore, ultra-long stroke, low-speed engine, MAN B& W 5G45ME-C9.5, has passed its type approval test Development of the new MAN G45 engine, built by STX Heavy Industries, focused on reducing exhaust gas emissions to a minimum, while the introduction of a fully electronically-controlled system that is said to optimise a vessel's 'green' profile. MAN offers the example of a G4S installed aboard an 800-teu container ship to show a typical application for the new engine type. Given a design draught of 8m for the vessel a 5.7m four-bladed propeller could be used. With this propeller and a service speed of 17 knots, MAN says an SMCR engine speed of around 105 rpm would be optimal and the SMCR power would be around 6,070 kw. At a normal continuous rating of 5,465 kw, a typical, modem, low-speed engine would have a specific fuel-oil consumption of 166 g/kwh, resulting in a daily fuel-oil consumption of 24.2 t/day.
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