Returnless fuel delivery systems are being developed to assist the vehicle OEM to meet lower emissions requirements for evaporative hydrocarbons from the vehicle. Because the fuel return line contributes to much of this vapor formation, its elimination is desirable. Existing returnless delivery techniques are considered including mechanical and electronic means for pressure regulation. A unique returnless system, called Demand Delivery System (DDS) incorporates desirable attributes of the existing techniques and provides additional functions of a rail mounted micro-size demand regulator. This DDS system eliminates the return line and its cost, providing significant reduction of vapor generation in the fuel tank. The Demand regulator provides rail pulsation damping, the ability to manifold vacuum reference, an accumulator function during hot soak, accommodation of dynamic line and filtration losses, and superior transient response to dynamic engine demands.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Demand Delivery System - Returnless Fuel Delivery


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1996



    Publication date :

    1996-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Demand Delivery System - Returnless Fuel Delivery

    Oberheide, G. C. / Tuckey, C. H. / Society of Automotive Engineers | British Library Conference Proceedings | 1996


    Demand delivery system - returnless fuel delivery

    Oberheide,G.C. / Tuckey,C.H. / Walbro Automotive,US | Automotive engineering | 1996


    Fuel Delivery Unit, Fuel Delivery System and Vehicle

    RAUBER JENS / KOCH MARCUS / KOTZA INGO | European Patent Office | 2021

    Free access

    Fuel delivery unit, fuel delivery system and vehicle

    RAUBER JENS / KOCH MARCUS / KOTZA INGO | European Patent Office | 2022

    Free access

    FUEL DELIVERY SYSTEM

    PALMER CHLOE J | European Patent Office | 2023

    Free access