MAN Diesel heralded a new era in its two-stroke diesel engines with the production of the first
MAN B&W S40ME-B engine. The new engine has been built by STX Heavy Industries Co., Ltd. at its Changwon works to the south of the Korean peninsula
, and passed its Type Approval Test.
The 6S40ME-B is the first such prime-mover for a series of multipurpose vessels of 25,000 dwt currently being built in China by Shandong Huanghai Shipbuilding Co. Ltd.
, and ordered by shipowner InterShip Navigation of Cyprus. The engine delivers 6,810 kW at 146 rpm with an MEP of 21 bar. The ME-B design is based on the experience gathered from MAN Diesel’s existing MC-C and ME-C engine ranges. To suit the small-bore segment, the ME-B design uses a camshaft-operated exhaust valve and an electronically controlled fuel-injection system as seen with the ME-C range.
The market requirement for the lowest possible propeller speed in relation to bore size has led to the new ME-B engine having a stroke/bore ratio of 4.4. In turn, the new engine has an increased maximum cylinder pressure, giving rise to an improved fuel consumption that is 2 g/kWh lower than existing, small-bore engines. Thanks to the electronic control of the engine’s parameters, the ME-B is also well equipped to meet the new Tier2 emission requirements.
Market reception for the new series has been very positive to date with a significant 63 orders already received, spread among the 35ME-B, 40ME-B and 50ME-B types. The 6S40ME-B engine has undergone a successful, comprehensive, test programme at Changwon to optimise its performance and verify the correlation between calculated and measured results.
MAN Diesel introduced the ME-B concept in mid-2006 with the small-bore S35ME-B and S40ME-B MAN B&W engine designs. It subsequently expanded the series in early 2007 with the launch of the S50ME-B MAN B&W engine design, with the result that the entire ME-B programme now boasts a total output range from 2,975 kW to 16,020 kW.