Cylinder deactivation has been proposed so far for improved part load operation of large gasoline engines. In all this application, the cylinder deactivation has been achieved keeping the intake and exhaust valves closed for a particular cylinder, with pistons still following their strokes. The paper presents a new mechanism between the piston and the crankshaft to enable selective deactivation of pistons, therefore decoupling the motion of the piston from the rotation of the crankshaft. The reduced friction mean effective pressure of the new technology enables the use of piston deactivation in large engines not necessarily throttle controlled but also controlled by quantity of fuel injected. Results of performance simulations are proposed for a HSDI V8 engine, producing significant savings during light operation.


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    Titel :

    Piston and Valve Deactivation for Improved Part Load Performances of Internal Combustion Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Boretti, Alberto (Autor:in) / Scalco, Joseph (Autor:in)

    Kongress:

    SAE 2011 World Congress & Exhibition ; 2011



    Erscheinungsdatum :

    2011-04-12




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Piston and Valve Deactivation for Improved Part Load Performances of Internal Combustion Engines

    Boretti, A. / Scalco, J. / Society of Automotive Engineers | British Library Conference Proceedings | 2011