An extensive experimental study of noise generating mechanisms of two production models of automotive alternators is presented. It was established that aerodynamic noise (generated by cooling fans) is dominating at high speeds (above 3,000 rpm), while electromagnetic noise is the most intensive at low rpm. Two directions of noise reduction are proposed and validated: reduction of noise levels generated by alternators to be achieved by using axial flow fans for cooling instead of presently used bladed discs, and radical reduction of operating speed of alternators by using variable transmission ratio accessory drives.


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    Titel :

    Noise Analysis of Automotive Alternators


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Rivin, Eugene (Autor:in) / DiSalvo, Michael (Autor:in) / Wu, Sean F. (Autor:in)

    Kongress:

    Noise & Vibration Conference & Exposition ; 1999



    Erscheinungsdatum :

    17.05.1999




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Noise analysis of automotive alternators

    Wu,S.F. / Rivin,E. / DiSalvo,M. et al. | Kraftfahrwesen | 1999


    Automotive alternators

    Vasilevskii, V. | Tema Archiv | 1974


    Flow in automotive alternators

    Brungart, T.A. | Online Contents | 1996


    Flow in automotive alternators

    Brungart, T.A. / Meyer, G.A. / Lauchle, G.C. | Tema Archiv | 1996


    Flow in Automotive Alternators

    Brungart, T A / Meyer, G A / Lauchle, G C | SAGE Publications | 1996