Diesel NOx emissions control utilizing combined Lean NOx Trap (LNT) and so-called passive or in-situ Selective Catalytic Reduction (SCR) catalyst technologies (i.e. with reductant species generated by the LNT) has been the subject of several previous papers from our laboratory [ 1 - 2 ]. The present study focuses on hydrocarbon (HC) emissions control via the same LNT+SCR catalyst technology under FTP driving conditions. HC emissions control can be as challenging as NOx control under both current and future federal and California/Green State emission standards. However, as with NOx control, the combined LNT+SCR approach offers advantages for HC emission control over LNT-only aftertreatment. The incremental conversion obtained with the SCR catalyst is shown, both on the basis of vehicle and laboratory tests, to result primarily from HC adsorbed on the SCR catalyst during rich LNT purges that reacts during subsequent lean engine operation.


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    Titel :

    Laboratory and Vehicle Demonstration of “2nd-Generation” LNT + in-situ SCR Diesel Emission Control Systems


    Weitere Titelangaben:

    Sae Int. J. Engines


    Beteiligte:
    Jen, Hung-Wen (Autor:in) / Xu, Lifeng (Autor:in) / Tennison, Paul (Autor:in) / McCabe, Robert (Autor:in)

    Kongress:

    SAE 2011 World Congress & Exhibition ; 2011


    Erschienen in:

    Erscheinungsdatum :

    2011-04-12


    Format / Umfang :

    17 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Xu, Lifeng / Dearth, Mark / McCabe, Robert et al. | SAE Technical Papers | 2010



    2011-01-0308 Laboratory and Vehicle Demonstration of ``2nd-Generation'' LNT + in-situ SCR Diesel Emission Control Systems

    Xu, L. / McCabe, R. / Tennison, P. et al. | British Library Conference Proceedings | 2011



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    International Fall Fuels and Lubricants Meeting and Exposition | TIBKAT | 2001