ACTUATOR FOR HYDRAULIC VALVE OF CAM PHASER AND HYDRAULIC VALVE WITH ACTUATOR FOR CAM PHASER

摘要

The invention relates to an actuator for a hydraulic valve of a Nockenwellenschwenkmotorversteller with a magnet housing (7), which receives a magnetized metal sleeve (71) and one of the metal sleeve (71) radially encompassed coil (22) for generating a magnetic field, wherein the coil ( 22) in a magnet housing (7) positioned non-magnetizable bobbin (23) is immovably received, and wherein the bobbin (23) at least partially a pole core (8) and a pole core (8) axially spaced Polkernjoch (82), and wherein the pole core (8) and the Polkernjoch (82) a sleeve (10) are positioned radially delimiting, wherein the non-magnetic sleeve (10) has a partition wall between an inner space (15) of the sleeve (10) and the pole core (8) or Polkernjoch (82) forms, and wherein in the interior (15) an armature (24) with a standing with the armature (24) in operative connection plunger (21) along a longitudinal axis (L2) of the actuator (2) axi al is arranged movable, and wherein in the interior (15) a hydraulic fluid for improved mobility of the armature (24) is formed, and wherein the plunger (21) for positioning a valve piston (4) of the hydraulic valve (1) is formed, wherein the plunger (21) the valve piston (4) is designed to be touched, and wherein the plunger (21) is a Polkerneinsatz (84) which is positioned in the magnet housing (7), such that it can be arranged adjacent to the hydraulic fluid flow-through hydraulic valve (1) adjacent axially permeable, and wherein the armature (24) is movable upon application of a voltage to the coil (22). The Polkerneinsatz (84) closes the inner space (15) of the sleeve (10) and the cavity (73) of the magnet housing (7) relative to the hydraulic valve (7), wherein for sealing the coil (22) relative to the hydraulic fluid of the hydraulic valve (1) as well as with respect to the hydraulic fluid of the inner space (15), a first sealing element (14) between the Polkerneinsatz (84), the sleeve (10), in the cavity (73) is arranged.