This paper presents an analytical approach to predict knock sensor locations with the consideration of background noise in align with current accelerometer based knock detection techniques.Finite element (FE) based forced frequency response analysis is used to estimate the paths in engine structure for the propagation of dynamic energy generated by both combustion knock pressure and engine background noise sources. The analysis is performed with the consideration of the facts that, within interested frequency range, knock pressure, background noise sources, and even the accuracy of FE simulation, are uncertain or cannot be described precisely. Distributions for both knock sensitivity and CAE signal to noise ratio are obtained as results and used to predict the optimal knock sensor locations. Good correlation with testing results is observed.


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    Title :

    Prediction of Knock Sensor Locations with Background Noise


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2005 Noise and Vibration Conference and Exhibition ; 2005



    Publication date :

    2005-05-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


    Prediction of knock sensor locations with background noise

    Shi,Y. / Ford Motor,US | Automotive engineering | 2005


    Prediction or Knock Sensor Locations with Background Noise

    Shi, Y. / Society of Automotive Engineers | British Library Conference Proceedings | 2005


    Computing the optimum knock sensor locations

    Bengisu,T. / General Motors,US | Automotive engineering | 2002



    Computing the Optimum Knock Sensor Locations

    Bengisu, T. / Society of Automotive Engineers | British Library Conference Proceedings | 2002