The lower temperatures encountered with European Stage III/IV turbo charged direct injection (DI) Diesel engines with additional features such as cooled exhaust gas recirculation (EGR), compared to Stage II engines, means that modern light duty Diesel engine exhaust gas will rarely exceed temperatures of around 550° - 650°C under full load conditions, and under normal driving conditions, temperatures as low as 120°C will be common. The development of high activity Diesel oxidation catalysts (DOCs) having good low temperature performance is therefore key for achieving hydrocarbon (HC) and carbon monoxide (CO) conversions to meet Stage III and IV legislation. It is shown that extended operation of conventional DOC technology, at the lower temperatures encountered on modern Diesel engines, introduces an important mechanism of catalyst deactivation by accumulation of soot/coke and associated sulfur. This paper describes the development of new DOC technology with emphasis on performance following both low and high temperature operation. A turbo charged DI common rail Diesel engine powered passenger vehicle equipped with the new catalyst technology has been shown to pass the European Stage III legislation after 80,000 km vehicle ageing.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Development of Advanced Diesel Oxidation Catalysts


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Mobility Technology Conference and Exhibit ; 1999



    Publication date :

    1999-12-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Diagnostics for Diesel Oxidation Catalysts

    Upadhyay, Devesh / Yuan, Fumin / van Nieuwstadt, Michiel | SAE Technical Papers | 2005


    Diagnostics for diesel oxidation catalysts

    van Nieuwstadt,M. / Upadhyay,D. / Yuan,F. et al. | Automotive engineering | 2005


    DEVELOPMENT OF DIESEL OXIDATION CATALYSTS FOR HEAVY DUTY ENGINES

    Brear, F. / Zammit, M.G. / D'Aniello, M.J. et al. | SAE Technical Papers | 1993


    New Developments in Diesel Oxidation Catalysts

    Moss, Bethanie / Todd, Brandon / Wise, Brent et al. | SAE Technical Papers | 2008


    New developments in diesel oxidation catalysts

    Paulson, Tom / Moss, Bethanie / Todd, Brandon et al. | Tema Archive | 2008