Experimental studies have proved that dimethyl ether (DME) is a promising alternative fuel for compression ignition direct injection (CIDI) engines. To study the mechanisms of DME combustion and the formation of NOx emissions, which becomes the most noticeable pollutant since no soot is produced even under heavy loads for DME operation, a quasi-dimensional multizone combustion model for DI engines fuelled with DME is presented in this paper, together with its application on a DME engine, which is derived by revamping a diesel engine. To validate the model, an extensive experimental investigation has been conducted on the DME engine. By comparing theoretical and experimental results it is revealed that the model predicts with reasonable accuracy NOx emissions and engine performance. Furthermore, the model makes it possible to study the combustion mechanism by visualizing the temperature and fuel distribution at various instances of time from fuel injection. The model also offers a better understanding of the mechanisms of NOx formation by providing information on the areas inside the fuel jet where the pollutants are formed, on the evolution of the jet and on the evolution of the NOx concentration in the jet.


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    Title :

    Quasi-dimensional multizone combustion model for direct injection engines fuelled with dimethyl ether


    Contributors:
    Meng, Xianghui (author) / Jiang, Zuhua (author) / Wang, Xibin (author) / Jiang, Deming (author)


    Publication date :

    2004-03-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Quasi-dimensional multizone combustion model for direct injection engines fuelled with dimethyl ether

    Meng, Xianghui / Jiang, Zuhua / Wang, Xibin et al. | Tema Archive | 2004



    Combustion and performance of heavy-duty diesel engines fuelled with dimethyl ether

    Zhang, J-J / Huang, Z / Wu, J-H et al. | SAGE Publications | 2008


    Combustion and performance of heavy-duty diesel engines fuelled with dimethyl ether

    Zhang,I.J. / Huang,Z. / Wu,J.H. et al. | Automotive engineering | 2008