Work on the construction of a hybrid drive for a city bus has led to a solution in which hydro-pneumatic energy accumulators and a variable-speed transmission with a parallel power flow are used. In the controllable part of the variable-speed transmission there is a hydrostatic transmission operating in four quarters of the power field, owing to which it is possible to transfer energy to and from the vehicle wheels through the variable-speed transmission. A change in the direction of an energy flow results in a change in the value of pressure in the operating conduits of the hydrostatic transmission from suction to force. Die hydro-pneumatic accumulators were connected to the operating system by means of a system of logic valves controlling the flow and pressure, irrespective of the fact which operating conduit is a pressure conduit at a given moment.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The drive and control system for a prototype variable-speed transmission and hydropneumatic energy accumulators


    Additional title:

    Das Antriebs- und Steuerungssystem eines drehzahlveränderlichen Fahrzeuggetriebes und eines hydropneumatischen Akkumulators


    Contributors:


    Publication date :

    1998


    Size :

    10 Seiten, 5 Bilder, 4 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English








    HYDROPNEUMATIC SUSPENSION COMPONENT

    COAKLEY JOHN FITZGERALD / MASSAGLIA JAMES | European Patent Office | 2023

    Free access