Abstract A combination of experimental and numerical methodologies is proposed for the investigation of knocking in spark ignition engines to aid in better understanding the physical and chemical processes that occur and to exploit the capabilities of a developed computational tool. The latter consists of a thermo-fluid dynamics model, which is part of an advanced 1-D fluid dynamics code for the simulation of the entire engine, and a complex chemistry model, which can be embedded into the thermo-fluid dynamics model using the same integration algorithm for the conservation equations and the reacting species. Their mutual interaction in the energy balance will be considered. The experimental activity was carried out in the combustion chamber of an optically accessible, single-cylinder P.F.I. engine equipped with a commercial head. The experimental data consisted of optical measurements correlated to the combustion and auto-ignition processes within the cylinder. The optical measurements were based on 2-D digital imaging, UV visible natural emission spectroscopy and the chemiluminescence of radical species (OH and HCO). The engine parameters, the pressure signals of the related data and optical acquisition are compared on an individual cycle basis in the simulation by running the engine at a constant speed and varying the spark advance from normal combustion to heavy knock conditions.


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    Titel :

    Application of a thermodynamic model with a complex chemistry to a cycle resolved knock prediction on a spark ignition optical engine


    Beteiligte:
    D’Errico, G. (Autor:in) / Lucchini, T. (Autor:in) / Merola, S. (Autor:in) / Tornatore, C. (Autor:in)


    Erscheinungsdatum :

    2012




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Klassifikation :

    BKL:    55.20$jStraßenfahrzeugtechnik / 55.20 Straßenfahrzeugtechnik



    Application of a thermodynamic model with a complex chemistry to a cycle resolved knock prediction on a spark ignition optical engine

    D’Errico, G. / Lucchini, T. / Merola, S. et al. | British Library Online Contents | 2012



    Prediction of knock occurrence in a spark-ignition engine

    Chun,K.M. / Heywood,J.B. / Keck,J.C. et al. | Kraftfahrwesen | 1988


    Spark Ignition Engine Knock Detection Using In-Cylinder Optical Probes

    Kittelson, David B. / Blackshear, Perry L. / Sun, Zhihong | SAE Technical Papers | 1996


    Characterization of Knock in a Spark-Ignition Engine

    Heywood, John B. / Chun, Kwang Min | SAE Technical Papers | 1989