PRESSURE CONTROL VALVE AND DEVICE COMPRISING SUCH A PRESSURE CONTROL VALVE, FOR OPEN-LOOP OR CLOSED-LOOP CONTROL OF THE PRESSURE OF A COMPRESSED FLUID IN A PILOT PRESSURE CHAMBER

摘要

The present invention relates to a pressure control valve (30) for open-loop or closed-loop control of the pressure of a compressed fluid in a pilot pressure chamber (12), comprising: a valve housing (50) with at least one input (41) and at least one output (43); a wall portion (51) which is connected fixedly to the valve housing (50) and has a first passage channel and a first through-bore, through which compressed fluid can flow, and forms a first valve seat; a tappet (52), which is mounted in the valve housing (50) so as to be movable along a longitudinal axis (L) by means of an energisable actuation device (49); a first sealing element (54), which is mounted in the valve housing (50) so as to be movable along the longitudinal axis (L) and is prestressed by means of a first spring (56) into a closing position, in which the first sealing element (54) bears against the first valve seat (58) and closes the first through-bore, the first sealing element (54) having a second passage channel (60), through which the compressed fluid can flow and which is fluidically connectable to the first passage channel; and a second sealing element (64), which is secured to the tappet (52) and, as a result of the actuation device (49) being energised, is movable by means of the tappet (52) along the longitudinal axis (L) between a first position, in which the second sealing element (64) bears against the wall portion and closes the first passage channel, and a second position, in which the second sealing element (64) bears against a second valve seat (66).