The invention relates to an electropneumatic parking brake valve device (1) for actuating a spring-type parking brake (4) in an electropneumatic brake system (2), wherein the parking brake valve device (1) is of bistable design with a travel position and a parking position as steady-state positions, and has: three pneumatic ports (1a, 1b, 1c), which form a compressed-air inlet (1a) for connection to a compressed-air supply (3), a compressed-air outlet (1b) for connection to the spring-type parking brake (4), and a deaeration port (1c); a relay valve line (20), which connects the compressed-air inlet (1a) and compressed-air outlet (1b) and which has a relay valve (14) which is pneumatically actuable by means of a control volume (15); and an electrically actuable inlet and outlet valve device (10, 11) for the aeration of the control volume (15) by connection to the compressed-air inlet (1a) and deaeration of the control volume (15) by connection to the deaeration port (1c). Here, it is provided that, between the control volume (15) and the compressed-air inlet (1a) and/or deaeration port (1c), a bypass line (19, 119) with a bypass valve device (12, 112) pneumatically actuated by means of the control volume (15) is provided for the purposes of connecting or separating the control volume (15) to or from the port (1a, 1c), and in at least one of the steady-state positions, the bypass valve device (12, 112) is actuated by means of the control volume (15) such that said bypass valve at least partially bypasses the inlet and outlet valve device (10, 11) and connects the control volume (15) to the port (1a, 1c).
PARKBREMS-VENTILEINRICHTUNG ZUR ANSTEUERUNG EINER FEDERSPEICHERFESTSTELLBREMSE
PARKING BRAKE VALVE DEVICE FOR ACTUATING A SPRING-TYPE PARKING BRAKE
ARRANGEMENT DE VANNES DE FREIN DE STATIONNEMENT POUR COMMANDER UN FREIN D'IMMOBILISATION À RESSORT ACCUMULATEUR
08.07.2020
Patent
Elektronische Ressource
Deutsch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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