By using additional fuel enrichment, the influence of an electrical heater and the oxidation of unburnt exhaust gases on the reaction of an electrically-heated catalyst under cold-start condition of a four-stroke motorcycle engine was investigated. The effects of different cold-start enriching times, heating temperatures, exhaust settings of the CO level and heating positions were studied. The heating temperatures were 60, 80, 100 and 120°C, and the CO levels were 1.0 and 1.8 per cent. The two heating positions were at the inlet and the mid-section of the catalyst. The results showed that additional enrichment of the intake mixture can reduce the heating temperature for self-reaction of the catalyst as well as improve the conversion effciency of the catalyst on the exhaust emissions. High conversion effciency has been achieved for a heating temperature as high as 100°C for the 1.8%CO setting level. It has also been revealed that self-reaction of the catalyst was not possible for a heating temperature of up to 140°C in the case of a 1.0%CO setting level.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Reaction of the electrically-heated catalyst of a four-stroke motorcycle engine under cold-start conditions with additional enrichment of the intake mixture


    Contributors:


    Publication date :

    2003-12-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English