An analysis procedure, using the time-frequency distribution, has been developed for the analysis of internal combustion engine noise signals. It provides an approach making use of advantages of both the linear time-frequency distribution and the bilinear time-frequency distribution but avoiding their disadvantages. In order to identify requirements on the time-frequency analysis and also correlate a time-frequency analysis result with noise sources, the composition of the noise signal is discussed first. With this discussion, a mathematical model has been suggested for the noise signal. An example of identifying noise sources and detecting the abnormal condition of an injector with the noise signal time-frequency distribution for a diesel engine is also provided.
Internal Combustion Engine Noise Analysis With Time-Frequency Distribution
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division, June 2000; final revision received by the ASME Headquarters, August 2001. Editor: D. N. Assanis.
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Zheng, G. T., and Leung, A. Y. T. (June 19, 2002). "Internal Combustion Engine Noise Analysis With Time-Frequency Distribution ." ASME. J. Eng. Gas Turbines Power. July 2002; 124(3): 645–649. https://doi.org/10.1115/1.1455639
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