Combustion control strategies based on the peak pressure position (PPP) can be used to optimize the engine efficiency in a torque producing sense. Though the methods are easy to implement, the direct acquisition of the in-cylinder pressure requires sensors that are expensive and have a reduced lifetime. This paper addresses the problem of obtaining reliable PPP estimates with structure-borne sound signals from accelerometers mounted on the engine's surface. Measurement data collected from a four cylinder SI test bed engine are used to validate the proposed approach. It is observed that, compared to the amplitude, the position of the pressure maximum can be robustly estimated with moderate sampling rates. The results are improved by combining several accelerometers into a multichannel signal.


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    Title :

    Peak Pressure Position Estimation from Structure-Borne Sound


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2005 World Congress & Exhibition ; 2005



    Publication date :

    2005-04-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Peak pressure position estimation from structure-borne sound

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    Villarino, R. / Bohme, J. F. / Society of Automotive Engineers | British Library Conference Proceedings | 2005


    In-Cylinder Pressure Estimation from Structure-Borne Sound

    Böhme, Johann F. / Förster, Jürgen / Wagner, Michael | SAE Technical Papers | 2000


    In-Cylinder Pressure Estimation from Structure-Borne Sound

    Wagner, M. / Bohme, J. F. / Forster, J. et al. | British Library Conference Proceedings | 2000


    In-cylinder pressure estimation from structure borne sound

    Wagner,M. / Boehme,J.F. / Foerster,J. et al. | Automotive engineering | 2000