This paper describes the use of digital measurements to assess acoustic intensity close to the various surfaces of a two litre gasoline engine. Using phase-locked data acquisition an acoustic power balance is constructed for the engine which is shown to correlate well with three other methods - lead covering, average surface vibration level and close microphone. However, the prediction of sound pressure level from these power balances is shown to be difficult, at least at 1 m from the surface. A simple relationship between acoustic intensity and sound pressure level in the frequency domain has been found.


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    Titel :

    Digital Acoustic Intensity Techniques in Gasoline Engine Noise Studies


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Anderton, D. (Autor:in) / Abe, T. (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1982



    Erscheinungsdatum :

    01.02.1982




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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