Engine noise reduction is one of the highest priorities in vehicle development from the viewpoint of meeting stringent noise regulations. Engine noise reduction involves identification of noise sources and suppression of noise by changing the response of sources to input excitations. Noise can originate from several mechanical sources in engine. The present work focuses on systematic study of the behavior or response of engine structure and its ancillaries to engine excitation and thereby assess their contribution to overall engine noise. The approach includes engine noise and vibration measurement and component ranking using engine noise and vibration measurement in a non-anechoic environment, structural analysis of engine including experimental modal testing of engine and its components, etc. Correlation of the above obtained results is performed to identify the noise sources. Later, ranking of critical components was performed based on results of cladding exercise. Finally these critical engine components were modified suitably and perceivable reduction in engine noise was observed.


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    Title :

    A Structural Analysis Approach for Engine Noise Source Identification and Refinement


    Additional title:

    Sae Technical Papers



    Conference:

    Noise and Vibration Conference and Exhibition ; 2017



    Publication date :

    2017-06-05




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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