Patent ID: 6397891
Filing Date: 2002-06-04
Classification: G05D,Y10T

Abstract:
A hydraulic control valve comprising:a solenoid (10) comprising a coil (33) having an interior; said solenoid (10) further comprising a pole shoe (34) inserted partially into said interior of said coil (10), wherein said interior of said coil (10) defines an armature chamber (39) and wherein said pole shoe (34) delimits said armature chamber (39) axially; said solenoid (10) further comprising an armature (40) arranged in said armature chamber (39) and moveable in said armature chamber (39) relative to said coil (33); said solenoid (10) further comprising an armature plunger (42) connected to said armature (40), wherein said pole shoe (34) has a central bore (43) and wherein said armature plunger (42) is received in said central bore (43) and penetrates said pole shoe (34); a hydraulic part (11) comprising a valve housing (12) formed as a mounting bushing and resting against said pole shoe (34); said valve housing (12) having an axial valve bore (13); said hydraulic part (11) having a low pressure area (T) surrounding said valve housing (12), wherein said valve housing (12) has at least one radial bore (27) connecting said axial valve bore (13) with said low pressure area (T); said hydraulic part (11) having a valve slide (14) slidably arranged in said valve bore (1) and configured to be moved by said armature (40) via said armature plunger (42); wherein between said pole shoe (34) and said valve housing (12) a fluid chamber (44, 56) is formed, wherein said fluid chamber (44, 56) has a fluid connection with said armature chamber (39) and with said low pressure area (T); wherein said fluid connection is located external to said at least one radial bore (27).