Urea SCR (Selective Catalytic Reduction) system has high potential of reducing NOx. But such as system durability and safety under deteriorated catalysts conditions have not been well enough clarified because it is new technology for vehicles. In this paper, current NOx emission level of an engine equipped with urea SCR system is discussed and then exhaust emission characteristics were analyzed when the SCR catalyst and/or oxidation catalyst lose their functions. When both SCR and oxidation catalyst were de-activated, not only NOx but also PM increased remarkably, which were much more than the engine-out emissions. Oxidation catalyst downstream of SCR catalyst was effective to suppress such deteriorations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Emission Characteristics of a Urea SCR System under Catalysts Activated and De-Activated Conditions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2006 World Congress & Exhibition ; 2006



    Publication date :

    2006-04-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Emission characteristics of a urea SCR system under catalytic activated and de-activated conditions

    Suzuki,H. / Ishii,H. / National Traffic Safety a.Environment Lab.,JP | Automotive engineering | 2006


    Emission characteristics of a urea SCR system under the NOx level of Japanese 2009 emission regulation

    Ishii,H. / Suzuki,H. / Hori,S. et al. | Automotive engineering | 2007


    Emission Characteristics of a Urea SCR System under the NOx Level of Japanese 2009 Emission Regulation

    Ishii, H. / Suzuki, H. / Hori, S. et al. | British Library Conference Proceedings | 2007


    Emission Characteristics of a Urea SCR System under the NOx Level of Japanese 2009 Emission Regulation

    Ishii, Hajime / Suzuki, Hisakazu / Hori, Shigeo et al. | SAE Technical Papers | 2007


    Analysis of Emission and Formation Characteristics of Nitrous oxide (N2O) under Urea SCR

    Suzuki, H. / Ishii, H. / Jidosha Gijutsukai | British Library Conference Proceedings | 2008