Downsizing and turbocharging for retaining the maximal power is a widely used approach to decrease the fuel consumption of spark ignited engines. In general, the trade-off is a substantial driveability loss. In-cylinder boosting has proven to be an effective way to eliminate this problem. Thus far, expensive and complex fully variable valve-trains have been proposed for the air exchange between the air tank and the combustion chamber. This paper is the first of a two-part study that examines the use of a deactivatable camshaft-driven valve with respect to the achievable transient engine performance. The system characteristics and limitations are discussed by using a mean value engine model that is adapted for in-cylinder boosting. A model-based design framework is presented which links the valve system design to a desired engine performance. The companion paper covers control issues and provides experimental verifications.


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    Title :

    In-cylinder boosting of turbocharged spark-ignited engines. Part 1: Model-based design of the charge valve


    Contributors:


    Publication date :

    2012-10-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    In-cylinder boosting of turbocharged spark-ignited engines. Part I: model-based design of the charge valve

    Voser,C. / Doenitz,C. / Ochsner,G. et al. | Automotive engineering | 2012



    In-cylinder boosting of turbocharged spark-ignited engines. Part 2: Control and experimental verification

    Voser, Christoph / Ott, Tobias / Dönitz, Christian et al. | SAGE Publications | 2012



    In-cylinder boosting of turbocharged spark-ignited engines. Part 2: Control and experimental verification

    Voser, Christoph / Ott, Tobias / Dönitz, Christian et al. | Tema Archive | 2012