This paper presents the development of a Stochastic Knock Detection (SKD) method for combustion knock detection in a spark-ignition engine using a model based design approach. The SKD set consists of a Knock Signal Simulator (KSS) as the plant model for the engine and a Knock Detection Module (KDM). The KSS as the plant model for the engine generates cycle-to-cycle accelerometer knock intensities following a stochastic approach with intensities that are generated using a Monte Carlo method from a lognormal distribution whose parameters have been predetermined from engine tests and dependent upon spark-timing, engine speed and load. The lognormal distribution has been shown to be a good approximation to the distribution of measured knock intensities over a range of engine conditions and spark-timings for multiple engines in previous studies. The KDM processes these signals with a stochastic distribution estimation algorithm which outputs estimates of knock intensity and at a level characteristic of high knock and a referenced level which are then used to determine a calibrated and referenced knock factor. The knock factor is analyzed and compared with a traditional knock detection method to detect engine knock under various engine operating conditions.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Stochastic Knock Detection Model for Spark Ignited Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Chen, Bo (Autor:in) / Polonowski, Christopher (Autor:in) / Naber, Jeffrey (Autor:in) / Lonari, Yashodeep (Autor:in)

    Kongress:

    SAE 2011 World Congress & Exhibition ; 2011



    Erscheinungsdatum :

    2011-04-12




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Stochastic Knock Detection Model for Spark Ignited Engines

    Lonari, Y. / Polonowski, C. / Naber, J. et al. | British Library Conference Proceedings | 2011



    Performance and Knock limits of ethanol gasoline blends in spark-ignited engines

    Radwan,M. / Univ.Helwan,Fac.Engng.Technol.,US | Kraftfahrwesen | 1985



    Spark-ignited engines from Uni Diesel

    Uni Diesel,FR | Kraftfahrwesen | 1987