In this paper, the modifications realized to make optically accessible a commercial high performance spark ignition and direct injection (DI) 4-cylinder engine are reported. The engine has been designed trying to keep as much as possible its thermo-fluid dynamic configuration in order to maintain its performance and emissions. Two optical accesses have been realized in order to interfere as little as possible with the combustion chamber geometry. A first optical access has been achieved in the piston head and a second by inserting an endoscopic fiber probe in the head. Preliminary results demonstrated that this optical assessment responds to the design targets and allowed a characterization of a commercial GDI engine working with homogeneous and stratified charge mode.


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    Title :

    Design for an Optically Accessible Multicylinder High Performance GDI Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    10th International Conference on Engines & Vehicles ; 2011



    Publication date :

    2011-09-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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