To fulfill future emission standards for diesel engines, combined after-treatment systems consisting of different catalyst technologies and diesel particulate filters (DPF) are necessary. For designing and optimizing the resulting systems of considerable complexity, effective simulation models of different catalyst and DPF technologies have been developed and integrated into a common simulation environment called ExACT (Exhaust After-treatment Components Toolbox). This publication focuses on a model for the NOx storage and reduction catalyst as a part of that simulation environment.A heterogeneous, spatially one-dimensional (1D), physically and chemically based mathematical model of the catalytic monolith has been developed. A global reaction kinetic approach has been chosen to describe reaction conversions on the washcoat. Reaction kinetic parameters have been evaluated from a series of laboratory experiments. The model was validated with data from passenger car dynamometer test bench and heavy duty commercial vehicle engine test bench measurements. The results show the applicability of the model over this wide range in size and operating conditions, underlining the suitability of the chosen modeling approach to the requirements. Series of simulations have been carried out to study the effects of various operating conditions on the converter performance.


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    Title :

    Simulation Of NOx Storage and Reduction Catalyst: Model Development And Application


    Additional title:

    Sae Technical Papers


    Contributors:
    Güthenke, A. (author) / Thinschmidt, B. (author) / Chatterjee, D. (author) / Kubíček, M. (author) / Marek, M. (author) / Weibel, M. (author) / Waldbüßer, N. (author) / Kočí, P. (author)

    Conference:

    SAE World Congress & Exhibition ; 2007



    Publication date :

    2007-04-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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    Simulation Of NOx Storage and Reduction Catalyst: Model Development And Application

    Guthenke, A. / Chatterjee, D. / Weibel, M. et al. | British Library Conference Proceedings | 2007


    NOx Reduction Catalyst Development

    Meguerian,G.H. / Rakowsky,F.W. / Res. Develop. Dept. Amoco Oil Comp. | Automotive engineering | 1975


    NOx Reduction Catalyst Development

    Rakowsky, F. W. / Meguerian, G. H. | SAE Technical Papers | 1975


    NOx reduction catalyst development.

    Meguerian,G.H. / Rakowsky,F.W. / Amoco Oil | Automotive engineering | 1975