期刊
APPLIED ACOUSTICS
卷 74, 期 4, 页码 502-508出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apacoust.2012.09.010
关键词
Internal combustion engine; Vibration; Acoustic emission; Fault detection
类别
Ensuring the availability and reliability of the Emergency Diesel Generators (EDGs) in nuclear power plants is a critical aspect to guarantee the plant safe shutdown in case of an emergency scenario. An effective engine diagnosis method is essential to fulfill that goal. For that purpose, this paper presents a fast and automatic engine diagnosis method based on a single parameter: the vibration/AE signals energy. The method is based on the comparison of the vibration and AE energy with reference values to determine whether the engine condition is faulty. The method was applied in a test engine, and proved to work satisfactorily. Therefore, it was used to diagnose the EDGs in a nuclear power plant, where regular rigorous inspections are effected periodically. An injector fault was detected thanks to the diagnosis method. (C) 2012 Elsevier Ltd. All rights reserved.
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