The paper deals with problems arising on the one hand from aplying diesel oxidation catalyst for minimizing HC emission at low exhaust gas temperatures prevailing in the European city driving cycle and on the other hand in preventing sulphate formation in the oxidation catalyst at higher temperatures as they appear e.g. in the ECE R49 13-mode certification cycle. The main parameters influencing the catalyst efficiency - exhaust gas temperature level, sulphur content in the fuel and catalyst specifications - are discussed and new solutions to fulfill the conflicting requirements are presented. The use of a highly active catalyst for exhaust gas treatment only up to the temperature limit of sulphates formation and by-passing it in the high temperature range appears to be a viable solution. As a result of this strategy, the oxidation catalyst is applicable in a wide exhaust gas temperature range from 150 up to 550 degrees Celsius with negligible sulphate emissions and high conversion efficiencies of the particulate soluble organic fraction and of gaseous emissions HC, CO, aldehydes and odour.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Diesel Oxidation Catalyst Application Strategies with Special Emphasis on Odour Reduction


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1994



    Publication date :

    1994-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Diesel Oxidation Catalyst Application Strategies with Special Emphasis on Odour Reduction

    Zelenka, P. / Hohenberg, G. / Graf, U. et al. | British Library Conference Proceedings | 1994


    Diesel oxidation catalyst application strategies with emphasis on odour reduction

    Zelenka,P. / Hohenberg,G. / Graf,U. et al. | Automotive engineering | 1994


    Exhaust odour reductions with a pre-catalyst system in an alcohol diesel engine

    Tsunemoto,H. / Ishitani,H. / Takizawa,T. et al. | Automotive engineering | 1993


    93EL025 Exhaust Odour Reductions with a Pre-catalyst System in an Alcohol diesel Engine

    Tsunemoto, H. / Ishitani, H. / Takizawa, T. et al. | British Library Conference Proceedings | 1993


    93EL025 Exhaust Odour Reductions with a Pre-catalyst System in an Alcohol Diesel Engine

    Tsunemoto, H. / Ishitani, H. / Takizawa, T. et al. | British Library Conference Proceedings | 1993