Selective catalytic reduction (SCR) is expected to be used extensively in the U.S. for diesel vehicle NOx control. Much progress has been made on improving performance and reducing complexity of SCR systems for vehicles in the past several years. SCR system complexity can be reduced further by implementation of SCR-coated diesel particulate filters (SCRFs). In this system, a high porosity (> 50%) filter substrate is coated with an SCR formulation, ideally in the pores of the filter walls, so that the DPF and SCR functions can be combined into a single catalyst.Two state-of-the-art Cu/zeolite SCR formulations and three types of high porosity filter substrates were included in this study. Laboratory and engine-dynamometer tests were performed to measure NOx conversion under a variety of conditions to assess the impact of ammonia oxidation, inlet NO2/NOx ratio, ammonia/NOx ratio, oxygen level, space velocity, soot loading, and ammonia loading level. In general, SCRF technology was found to perform similarly to traditional channel-flow catalysts with the same type of active materials.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Cu/Zeolite SCR on High Porosity Filters: Laboratory and Engine Performance Evaluations


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE World Congress & Exhibition ; 2009



    Erscheinungsdatum :

    2009-04-20




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Cu/Zeolite SCR on high porosity filters: laboratory and engine performance evaluations

    Cavataio,G. / Girard,J.W. / Lambert,C.K. et al. | Kraftfahrwesen | 2009


    2009-01-0897 Cu/Zeolite SCR on High Porosity Filters: Laboratory and Engine Performance Evaluations

    Cavataio, G. / Girard, J.W. / Lambert, C.K. et al. | British Library Conference Proceedings | 2009



    Performance Evaluations of Aluminum Titanate Diesel Particulate Filters

    Ingram-Ogunwumi, R. S. / Dong, Q. / Murrin, T. A. et al. | British Library Conference Proceedings | 2007


    Performance Evaluations of Aluminum Titanate Diesel Particulate Filters

    Heibel, A. K. / Warkins, J. L. / Dong, Q. et al. | SAE Technical Papers | 2007