The paper presents results of research of a gasoline engine capable of controlled auto-ignition (CAI) mode of combustion. The experiments were conducted on a single cylinder research engine equipped with direct fuel injection and a fully variable valvetrain. CAI operation was obtained with the use of the negative valve overlap (NVO) technique. The engine was operated at variable rotational speed and load. Comparative analysis of performance, fuel consumption and exhaust emissions was made for both SI and CAI combustion modes.Combination of variable valvetrain settings and variable excess air ratio allowed loads between 0.2 and 0.42 MPa IMEP in CAI combustion mode. Direct fuel injection provided the possibility to control the heat release rate via injection angle.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Experimental Study of the Gasoline Engine Operated in Spark Ignition and Controlled Auto-Ignition Combustion Modes


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2009 Powertrains Fuels and Lubricants Meeting ; 2009



    Publication date :

    2009-11-02




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English