We have performed an extensive study of cycle-to-cycle variation of engine knock and its occurrence in order to have a better understanding of engine knock. Experimental studies show the randomness of knock as well as its frequency varying nature. We propose using time-frequency based signal detection method to improve knock detection since this method can track frequency variations in the measured signals. The fundamental idea behind time-frequency analysis is to be able to understand and describe how the spectral content of a signal is changing in time. Classical signal analysis has traditionally dealt with time and frequency separately. Such individual descriptions are good in situation where spectral content of signals do not change with time; however, there are often signals that have time-varying spectral content such as engine knock. It is shown that one gains more information about knock signals using time-frequency analysis method. In addition, we have developed an improved knock detection algorithm using time-frequency detection method. The experimental studies performed on a 3.5 l V-6 engine using the proposed detection method show a significant improvement in signal-to-noise ratio (SNR) and the Receiver operating characteristic (ROC).


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Engine Knock Analysis and Detection Using Time-Frequency Analysis


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Samimy, Bahman (Autor:in) / Rizzoni, Giorgio (Autor:in)

    Kongress:

    International Congress & Exposition ; 1996



    Erscheinungsdatum :

    1996-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Engine knock analysis and detection using time-frequency analysis

    Samimy,B. / Rizzoni,G. / Delphi Saginaw Steering Systems,US et al. | Kraftfahrwesen | 1996


    96A4061 Engine knock detection using pattern recognition

    Thomas, J. H. / Dubuisson, B. / Dillies-Peltier, M. A. et al. | British Library Conference Proceedings | 1996


    Engine knock detection using multi-spectrum method

    Kaneyasu,M. / Kurihara,N. / Katogi,K. et al. | Kraftfahrwesen | 1992


    Engine knock

    Engineering Index Backfile | 1942


    Engine knock detection using multi-spectrum method

    Kaneyasu, M. / Kurihara, N. / Katogi, K. et al. | Tema Archiv | 1992