An application involving noise source reconstruction on a full automotive powerplant including the engine, manifolds and the transmission is considered herein, to demonstrate the versatility of modern generalized acoustical holography. The complex source geometry necessitates measurements on non-conforming surfaces. The acoustic pressures were experimentally acquired at three different engine excitations. Accelerometers were mounted at select locations on the powerplant in order to study the accuracy of the reconstructed vibrations from acoustical holography. Through a series of synthetically generated holograms with added random noise, it is conclusively demonstrated that the error margins in the reconstructed vibrations on the powerplant are consistent with errors in reconstructed vibrations from numerically synthesized holograms of a similar Signal to Noise Ratio (SNR).


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    Titel :

    Noise Source Identification in an Automotive Powerplant


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Na, Liqun (Autor:in) / Cheng, Ming-Te (Autor:in) / Sureshkumar, S. (Autor:in) / Raveendra, S. T. (Autor:in) / Abe, Takeshi (Autor:in)

    Kongress:

    SAE 2003 Noise & Vibration Conference and Exhibition ; 2003



    Erscheinungsdatum :

    05.05.2003




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Noise source identification in an automotive powerplant

    Raveendra,S.T. / Sureshkumar,S. / Cheng,M.T. et al. | Kraftfahrwesen | 2003


    Automotive Powerplant Isolation Strategies

    Brach, R. Matthew | SAE Technical Papers | 1997


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    Engineering Index Backfile | 1945


    Automotive Powerplant Isolation Strategies

    Brach, R. M. / Society of Automotive Engineers | British Library Conference Proceedings | 1997