The invention relates to a pneumatic pressure control valve (1) for a brake control system of a rail vehicle, comprising at least three pressure chambers which are supplied with compressed air and are disposed in a housing (2) of the pressure control valve (1), a first pressure chamber (6), which is sealed by a piston (3) and by a valve seat (5) arranged on a tappet (4), being subjected to a braking pressure (C) and being fluidically connected to a second pressure chamber (8) via a conduit (7) in the tappet (4) in order to relieve pressure, a further third pressure chamber (9), which is supplied with a supply pressure (R), being arranged between the two pressure chambers (6, 8) and the sealing between the third pressure chamber (9) and the second pressure chamber (8) being achieved by means of a flat membrane (10) which is arranged in the third pressure chamber (9) and which enables the tappet (4) to be axially displaced, the flat membrane (10) having a circular opening (11) which is arranged substantially centrally in order to provide a check function and through which the tappet (4) extends in the axial direction. The invention further relates to a pneumatic control valve (17) for brake control systems for rail vehicles that comprise a pneumatic pressure control valve (1) of this kind.
Pressure control valve with integrated pressure compensation function and check valve function
15.07.2015
Patent
Elektronische Ressource
Englisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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