A pneumatic brake actuator (10) comprising a spring brake actuator (14) with a spring chamber (58) and a spring brake pressure chamber (56). A service brake actuator (12) is coupled with the spring brake actuator (14) and comprises a service brake pressure chamber (38). A valve body (106) of the pneumatic brake actuator defines a channel (142) between the spring chamber and the service brake pressure chamber. A seal (136) is positioned within the channel in the valve body. The seal and the valve body enclose a valve chamber (208) that is not in fluid communication with the spring chamber (58) and the service brake pressure chamber (38). The seal (136) is moveable between an open position, in which fluid can flow through the channel between the spring chamber and the service brake pressure chamber, and a closed position, in which fluid is blocked from flowing through the channel. The seal is biased to the open position and comprises an opening (188), through which fluid flows when the seal is in the open position. The opening extends through the seal in a direction that is aligned with a direction of movement of the seal.


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    Title :

    PNEUMATIC BRAKE ACTUATOR WITH FLOW INSENSITIVE TWO WAY CONTROL VALVE


    Additional title:

    DRUCKLUFTBREMSZYLINDER MIT STRÖMUNGSUNEMPFINDLICHEM ZWEIWEGREGELVENTIL
    ACTIONNEUR DE FREIN PNEUMATIQUE AVEC SOUPAPE DE COMMANDE BIDIRECTIONNELLE INSENSIBLE À L'ÉCOULEMENT


    Contributors:

    Publication date :

    2018-05-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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