Engines and Propellers

Engines

　

Diesel Engines Hitachi Zosen-MAN B&W 12K90MC (Mark-6)

Hitachi Zosen-MAN B&W 8S50MC-C Compact Engine

　

In October 1997, Ariake Machinery Works of Hitachi Zosen in Kumamoto has completed the manufacture of Hitachi Zosen-MAN B&W 12K90MC diesel engine which was installed on the largest 6,600-TEU over-panamax container ship built in Denmark. This engine meets the owner's severe requirement such as (1) high strength dual material cylinder liner, (2) low wear rate and feed rate through application of CPR ring, and (3) use of high efficiency and low noise turbocharger. Good operational results were obtained.

　

　

Hitachi Zosen has also completed the 8S50MC-C main diesel engine for reefer vessel as the first engine of a compact type of B&W S-MC-C series. This compact engine is contributing to increase in the cargo space of the ship by shortening the length by 10% of the S-MC type and also its output is increased by 10% based on the mean effective pressure of 19 bar and S/D of 4.0., and furthermore the following have been newly applied：

a)　Twin stay bolt

b)　Tin-al shell bearing for main crank pin and cross head bearing

c)　High top land piston with gas-tight top ring

d)　Combustion chamber with high-grade material

　

Hitachi Zosen-MAN B&W 12K90MC (74,640 BHP)

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