The correlation between intake valve lift characteristics and air quantity entering the engine was analyzed to clarify the factors determining the intake air mass. This analysis was conducted using a variable valve actuation system capable of varying valve lift characteristics arbitrarily. A method was then devised for estimating the intake air mass from the lift characteristics without using complex physical equations and was validated in engine tests. This method facilitates calculation of the lift characteristics for obtaining the target intake air mass, making it possible to utilize fully the potential of a variable valve actuation system for engine torque control.


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    Title :

    A study of engine torque control by variable valve actuation


    Contributors:

    Published in:

    Publication date :

    2007


    Size :

    6 Seiten, 9 Bilder, 3 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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