Patent ID: 6328065
Filing Date: 2001-12-11
Classification: G05D,Y10T

Abstract:
Electromagnetic pressure regulating valve (10, 10a) with a magnet part (12) comprising at least one electrically controllable coil (15), a coil core (16) and an armature (17) which is guided so as to be displaceable, with a valve part (11, 11a) having an inlet (36, 36a), a return (37), a consumer connection (38, 38a), and a valve element (34, 35, 35a) cooperating with the armature (17), that the valve part (11, 11a) having a first seat valve (45) with a closing element (34) and an actuating element (35, 35a) which is switched between the armature (17) and the closing element (34), the actuating element (35, 35a) penetrating a control bore hole (42, 42a) of the valve part (11, 11a) and having a control edge (50) which forms a second seat valve (49) in cooperation with the valve bore hole (42), the ratio formed between the hydraulically active pressure surface (A1) of the first seat valve (45) and the hydraulically active pressure surface (A2) of the second seat valve (49) being less than 0.3, and the magnet part (12) forming a plunger stage in the form of an armature (17) which penetrates at least partially into the coil core (16).