Wavelet transform analysis is capable of revealing aspects of data that other techniques miss such aspects are trends, and discontinuities in higher derivates. This method can often compress or de-noise a signal without any appreciable degradation and it provides accurate information on the localization of energy content in time and frequency [1]. The Wavelet transform method has been applied to the analysis of combustion noise and piston slap in order to identify the effects on the engine structure vibration. The experimental results showed that combustion noise and piston slap were successfully detected from the acceleration signals picked up by external transducers in the outer wall of an in-line, 6 cylinder diesel engine.


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    Title :

    Wavelet Transform Analysis of Measurements of Engine Combustion Noise


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE Noise and Vibration Conference and Exposition ; 1997



    Publication date :

    1997-05-20




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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