In this article model-based controller design techniques are investigated for the transient operation of a common-rail diesel engine in order to optimize driveability and to reduce soot emissions. The computer-aided design has benefits in reducing controller calibration time.This paper presents a nonlinear control concept for the coordinated control of the exhaust gas recirculation (EGR) valve and the variable geometry turbocharger (VGT) in a common-rail diesel engine. The overall controller structure is set up to regulate the total cylinder air-charge with a desired fresh air-charge amount by means of controlling the intake manifold pressure and estimating the fresh air-charge inducted into the cylinders.During varying engine operating conditions the two control loops are coordinated by a compensation of the EGR valve action through the VGT controller. A nonlinear exhaust pressure controller is designed to regulate the estimated turbocharger power which compensates all EGR valve actions and results in the desired turbocharger power management.The VGT and EGR controllers, the cylinder air-charge observer and the turbocharger identification algorithm are developed based on a nonlinear diesel engine model. The benefits of the coordinated controller structure are demonstrated with transient engine measurements in a passenger car.


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    Titel :

    Model-Based Control of the VGT and EGR in a Turbocharged Common-Rail Diesel Engine: Theory and Passenger Car Implementation


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Glattfelder, A. H. (Autor:in) / Guzzella, L. (Autor:in) / Ammann, M. (Autor:in) / Fekete, N. P. (Autor:in)

    Kongress:

    SAE 2003 World Congress & Exhibition ; 2003



    Erscheinungsdatum :

    2003-03-03




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    2003-01-0357 Model-Based Control of the VGT and EGR in a Turbocharged Common-Rail Diesel Engine: Theory and Passenger Car Implementation

    Ammann, M. / Fekete, N. P. / Guzzella, L. et al. | British Library Conference Proceedings | 2003


    Control-oriented modelling of a turbocharged common-rail diesel engine

    Ammann,M. / Fekete,N. / Mastutz,A. et al. | Kraftfahrwesen | 2001


    Engine Friction Model for Transient Operation of Turbocharged, Common Rail Diesel Engines

    Taraza, Dinu / Henein, Naeim A. / Ceausu, Radu et al. | SAE Technical Papers | 2007


    Engine Friction Model for Transient Operation of Turbocharged, Common Rail Diesel Engines

    Taraza, D. / Henein, N. A. / Ceausu, R. et al. | British Library Conference Proceedings | 2007