Laser-based measurements of charge temperature and exhaust gas recirculation (EGR) ratio in an homogeneous charge compression ignition (HCCI) engine are demonstrated. For this purpose, the rotational coherent anti-Stokes Raman spectroscopy technique (CARS) was used. This technique allows temporally and locally resolved measurements in combustion environments through only two small line-of-sight optical accesses and the use of standard gasoline as a fuel.The investigated engine is a production-line four-cylinder direct-injection gasoline engine with the valve strategy modified to realize HCCI-operation. CARS-measurements were performed in motored and fired operation and the results are compared to polytropic calculations. Studies of engine speed, load, valve timing, and injection pressure were conducted showing the strong influence of charge temperature on the combustion timing.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Locally Resolved Measurement of Gas-Phase Temperature and EGR-Ratio in an HCCI-Engine and Their Influence on Combustion Timing


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Loch, Adam (Autor:in) / Leipertz, Alfred (Autor:in) / Jelitto, Christian (Autor:in) / Beyrau, Frank (Autor:in) / Willand, Jürgen (Autor:in) / Weikl, Markus C. (Autor:in)

    Kongress:

    SAE World Congress & Exhibition ; 2007



    Erscheinungsdatum :

    2007-04-16




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Active Combustion Control of Diesel HCCI Engine: Combustion Timing

    Chauvin, J. / Hillion, M. / Petit, N. et al. | SAE Technical Papers | 2008


    Active combustion control of diesel HCCI engine: combustion timing

    Hillion,M. / Chauvin,J. / Grondin,O. et al. | Kraftfahrwesen | 2008


    2008-01-0984 Active Combustion Control of Diesel HCCI Engine: Combustion Timing

    Hillion, M. / Chauvin, J. / Grondin, O. et al. | British Library Conference Proceedings | 2008