The invention relates to a park brake module (1) comprising a relay valve unit (17) for providing a brake release pressure (pBR) to a working port (7) and a safety unit (19) for connecting the working port (7) to the exhaust (9). The relay valve unit (17) comprises a relay piston (25), wherein the working port (7) is in fluid communication with an exhaust (9) when the relay piston (25) is in an exhaust position (29). The relay piston (25) is slidable independently of a safety piston (54) of the safety unit (19) when the safety piston (54) is a neutral position (75), and the relay piston (25) is locked in the exhaust position (29) when the safety piston (54) is in a safety position (77). The invention further relates to a method (300) for controlling a park brake function, a brake system (100) and a commercial vehicle (202).


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    Title :

    PARK BRAKE MODULE WITH RELAY VALVE AND SAFETY PISTON


    Additional title:

    PARKBREMSMODUL MIT RELAISVENTIL UND SICHERHEITSKOLBEN
    MODULE DE FREIN DE STATIONNEMENT AVEC SOUPAPE DE RELAIS ET PISTON DE SÉCURITÉ



    Publication date :

    2024-02-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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