A predictive knock model that utilizes a phenomenological modeling approach has been developed for predicting the onset of knock in gas engines. Several physical models have been developed and incorporated into WAVE, a comprehensive engine simulation code, including 1) a spatially resolved end gas thermodynamics model; 2) a model for calculating the chemical reaction rates of the reactants in the unburned zone; and 3) a model for approximating the heat transfer between the two-zone combustion model and end gas reaction model.The established predictive knock model has been demonstrated and validated against experimental data. A WAVE simulation model of the Caterpillar G3508 engine was created and used to predict engine knock over a range of fuels, spark timing and compression ratios. The computational results are compared to test data which were obtained from G3508 detonation timing test. Overall, good correlation was achieved between measured data by Caterpillar and data predicted by WAVE. Finally, a parametric study was performed to evaluate the effects of compression ratio on engine knock performance. Based on the parametric study performed, the knock limited compression ratio can be identified for the G3508 engine under a specified operating condition.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A Comprehensive Knock Model for Application in Gas Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Amlee, Duane (Autor:in) / Johns, Richard (Autor:in) / Ho, Simon (Autor:in)

    Kongress:

    1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1996



    Erscheinungsdatum :

    1996-10-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A Comprehensive Knock Model for Application in Gas Engines

    Ho, S. / Amlee, D. / Johns, R. et al. | British Library Conference Proceedings | 1996


    A comprehensive knock model for application in gas engines

    Ho,S. / Amlee,D. / Johns,R. et al. | Kraftfahrwesen | 1996


    Knock in Spark Ignition Engines

    By, A. / Kempinski, B. / Rife, J. M. | SAE Technical Papers | 1981


    Knock in Spark Ignition Engines

    By,A. / Kempinski,B. / Rife,J.M. et al. | Kraftfahrwesen | 1981


    Stochastic Knock Detection Model for Spark Ignited Engines

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