We have conducted technical research to achieve levels of evaporative emissions very close to zero. In the conventional fuel tank system, the internal pressure in the fuel tank and vapor lines varies between positive and negative values due to the outside temperature, rendering emission control and performance in the actual vehicle very difficult. We have developed a control system utilizing the negative pressure in the engine intake manifold to maintain a negative pressure (vacuum) in the fuel tank at all times. By always maintaining such a vacuum, the variation in internal pressure that depends on diurnal variation in ambient temperature and the rise in internal pressure that depends on engine load, have been eliminated, enabling emissions from the fuel system to be reduced significantly. This paper gives an outline of the technology mentioned above.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Reduction Technologies for Evaporative Emissions in Zero Level Emission Vehicle


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1999



    Publication date :

    1999-03-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Reduction Technologies for Evaporative Emissions in Zero Level Emission Vehicle

    Nuiya, Y. / Uto, H. / Suzuki, T. et al. | British Library Conference Proceedings | 1998


    Reduction technologies for evaporative emissions in zero level emission vehicle

    Nuija,Y. / Uto,H. / Suzuki,T. et al. | Automotive engineering | 1999


    "ZERO" EVAPORATIVE EMISSIONS

    Haskew, H. / Coordinating Research Council | British Library Conference Proceedings | 1998


    Reducing evaporative emissions to zero

    Diem,W. / TI Automotive,DE | Automotive engineering | 2002


    Vehicle repositioning for evaporative emission reduction

    DUDAR AED M | European Patent Office | 2019

    Free access