In April 1979, the IHI-S.E.M.T.-Pielstick 12PC2-5V BTC type diesel engine--the world's first PC engine employing a two-stage supercharging system--marked 8,100 hours of operation since the "M/V Seiyei Maru" propelled by it was put into commission on April 16, 1977. The engine is a combination of a PC2-5 type diesel engine and a two-stage supercharging system to step up the PC2-5 type engine's output from 650 PS to 850 PS. It runs on a low compression ratio in order that its maximum combustion pressure can be held down to the level of that of the PC2-5 type diesel engine. After 4,700 hours of service, the "M/V Seiyei Maru" received her first annual docking, and it was found that the cylinder liners, pistons, piston rings, cylinder covers and crankpin metals and main bearings, etc. were in excellent working order. There was a problem after the commissioning in that the exhaust valve lower bush wore down. But it was solved by employing a new exhaust valve cage equipped with a long bush and two gastight rings. As of the end of 1979, IHI turned out 12 units of the PC2-5 BTC type diesel engine, all of which are operating well.

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  • Corporate Authors:

    Ishikawajima-Harima Heavy Industries Co., Ltd.

    2-16, Toyosu 3 Chome, Koto-Ku
    Tokyo 135,   Japan 
  • Authors:
    • Tanaka, K
    • Komatsu, S
    • Yamamoto, H
  • Publication Date: 1980-4

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Filing Info

  • Accession Number: 00312332
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 27 1980 12:00AM