S80ME-C9 successfully passes extensive type approval test
The S80ME-C9 engine running on the testbed, supervised by classification society representatives
MAN Diesel & Turbo has announced that its latest, mark-9, 80-cm-bore engine recently passed its Type Approval Test (TAT). The super-longstroke S80ME-C9 engine now powers a Maersk Line container vessel and successfully completed its TAT at HHI-EMD, the Engine & Machinery Division of Hyundai Heavy Industries Co., Ltd., in Korea.
All international classification societies were represented during the presentation of the engine, test-bed trials, safety-device tests, performance-data survey and a thorough, internal inspection of the engine and disassembled key components.
The S80ME-C9 engine that underwent the TAT is the fourth in a series of 22 ordered by Maersk Line for its new fleet of 4500-teu container vessels. Constructed at Hyundai Heavy Industries in Korea, each engine is delivered with waste-heat recovery (WHR) technology, including power-turbine and steam-turbine installations. With WHR, exhaust gas is removed from the main engine before the turbocharger(s), which results in less air passing through the engine and, accordingly, a slightly increased fuel-oil consumption. However, by utilising the extra energy in the exhaust gas in the power and steam turbines, the overall efficiency of the complete system is increased significantly. When this is calculated in terms of fuel-oil consumption, a reduction of approximately 10 - 15% can be achieved.
Overall, the S80ME-C9 engine performed well both as an individual unit and in combination with WHR. Recently, MAN B&W engines introduced a new efficiency-optimised layout that includes increased scavenge-air and maximum-combustion pressures. With the latest technology, it is possible to reduce specific fuel-oil consumption by 2 g/kWh without increasing NOx emissions, a fact confirmed by the S80ME-C9 engine during testing.
Upon completion of its test programme, the two-stroke MAN B&W engine was subsequently installed aboard the Maersk Line container ship. The newbuilding, powered by the S80ME-C9 type, then successfully underwent a week’s sea trials in March 2011.
The 6S80ME-C9 engine is bound for the Maersk Line’s 4,500-teu container vessel, pictured here at Hyundai Heavy Industries.
