A study of factors affecting hydrocarbon oxidation in a diesel oxidation catalyst was undertaken. The objective was to determine whether interactions between particulate-adsorbed hydrocarbons and the catalyst significantly influenced hydrocarbon oxidation. Theoretical modeling supported by experimental data obtained at the U.S. Bureau of Mines' Diesel Emissions Research Laboratory indicated that the mass of particles interacting with the ceramic support was negligible. Additionally, a model of hydrocarbon adsorption onto diesel particulate predicted that over 98% by mass of exhaust hydrocarbons would be gas-phase, rather than particulate-adsorbed, at converter operating temperatures. A second physical process, the diffusion of gas phase hydrocarbons to the catalytic surface, was subsequently investigated. Theoretical and experimental results for the unburnt fuel hydrocarbons indicated that hydrocarbon oxidation was diffusion limited under high temperature operating conditions.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Physical Factors Affecting Hydrocarbon Oxidation in a Diesel Oxidation Catalyst


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Off-Highway & Powerplant Congress & Exposition ; 1994



    Publication date :

    1994-09-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Physical factors affecting hydrocarbon oxidation on a diesel oxidation catalyst

    Johnson,,J.E. / Kittelson,D.B. / US Bureau of Mines,US et al. | Automotive engineering | 1994


    Low Temperature Hydrocarbon Oxidation Diesel Oxidation Catalyst (DOC) with Improved Particulate Matter Oxidation Capability

    Kallakkavumkal, Ajith / Trigunayat, Alok / Kumar, Arvind et al. | SAE Technical Papers | 2021



    Conventional and Electrically Heated Diesel Oxidation Catalyst Physical Based Modeling

    Cerrelli, Giuseppe / Bianchi, Lorenzo / Ferreri, Paolo et al. | SAE Technical Papers | 2018


    Low sulfate generation diesel oxidation catalyst

    Kanno,Y. / Hihara,T. / Watanabe,T. et al. | Automotive engineering | 2004