Abstract: An electrohydraulic valve controller for variable actuation of a gas exchange valve of an internal combustion engine. The electrohydraulic valve controller has a first hydraulic valve and, for the purpose of providing an emergency running capability, a second hydraulic valve.

Abstract: An electromagnetic actuating unit for a hydraulic valve with a housing and a closure element. The housing at least partially delimits the electromagnetic actuating unit in relation to the surroundings. The closure element is arranged within an introductory opening of the housing. A sealing-means receptacle is formed on a boundary surface between the housing and the closure element. Furthermore, at least one first channel leads into the sealing-means receptacle and is open towards the surroundings of the actuating unit. A sealing element, which is arranged in the sealing-means receptacle is placed into the sealing-means receptacle via the first channel.

Abstract: An electromagnetic valve, which has a magnet armature chamber, a pressure medium chamber, a pressure medium inlet channel and a pressure medium outlet channel respectively connected to the pressure medium chamber, a valve seat, and a valve closure member that, upon bearing contact on the valve seat, blocks the connection between the pressure medium inlet channel and the pressure medium outlet channel, and a valve guide extending between the magnet armature chamber and the pressure medium chamber. A sealing ring made of a polymer, which surrounds the valve closure member and separates the magnet armature chamber from the pressure medium chamber, extends between the valve closure member and the valve guide. The geometric design of the sealing ring to the valve guide provides wear resistance for the sealing ring.

Abstract: An electromagnetic valve, which has a magnet armature chamber, a pressure medium chamber, a pressure medium inlet channel and a pressure medium outlet channel respectively connected to the pressure medium chamber, a valve seat, and a valve closure member that, upon bearing contact on the valve seat, blocks the connection between the pressure medium inlet channel and the pressure medium outlet channel, and a valve guide extending between the magnet armature chamber and the pressure medium chamber. A sealing ring made of a polymer, which surrounds the valve closure member and separates the magnet armature chamber from the pressure medium chamber, extends between the valve closure member and the valve guide. The geometric design of the sealing ring to the valve guide provides wear resistance for the sealing ring.

Abstract: An electrohydraulic valve controller for variable actuation of a gas exchange valve of an internal combustion engine. The electrohydraulic valve controller has a first hydraulic valve and, for the purpose of providing an emergency running capability, a second hydraulic valve.

Abstract: An electromagnetic actuating unit for a hydraulic valve with a housing and a closure element. The housing at least partially delimits the electromagnetic actuating unit in relation to the surroundings. The closure element is arranged within an introductory opening of the housing. A sealing-means receptacle is formed on a boundary surface between the housing and the closure element. Furthermore, at least one first channel leads into the sealing-means receptacle and is open towards the surroundings of the actuating unit. A sealing element, which is arranged in the sealing-means receptacle, is placed into the sealing-means receptacle via the first channel.

Abstract: An electromagnetic hydraulic valve (18) comprising an armature (2) which, in the region of its bottom-proximate end position (7) comprises a pressure chamber (9) which serves to damp the movements of the armature (2) and which is relieved from pressure via an annular gap (11) and for enhancing the damping action, the armature (2) further comprises a front-end cavity (36) for receiving hydraulic medium.