DIAGNOSIS OF GAS LEAKAGE FROM EXHAUST VALVE IN MARINE DIESEL ENGINE BY ACOUSTIC SOUND

The impetus for the development of standardized engine diagnostic systems has been the difficulty of recruiting skilled engineers and the trend toward ship automation. The authors discuss their efforts to establish such a system for marine diesels--one based on sounds. They describe their experiment on distinguishing between different sounds originating from a two-stroke diesel engine in which there was artificial gas leakage from the exhaust valve. Distinctive sounds were detected at the time of combustion and at the opening and closing of the exhaust valve. Power spectrum analysis was applied and power was found to increase with the enlargement of the slit cut in the exhaust valve. Although the system is so far proposed only for diagnosing gas leakage, it could be developed into a more general diagnostic system in the future.

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  • Supplemental Notes:
    • Journal article
  • Authors:
    • Katagi, T
    • HASHIMOTO, T
    • Nitta, K
  • Publication Date: 1989-3

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Filing Info

  • Accession Number: 00657510
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM