Patent ID: 8118059

Claim:
Control valve for influencing pressurization of a camshaft actuator of an internal combustion engine with pressurized medium, the control valve comprising: a) a valve housing and b) a control piston, which is arranged in the valve housing and which can be displaced axially, wherein c) pressurization of a pressurized medium connection, a tank connection, and at least one work connection with pressurized medium can be changed as a function of an axial position of the control piston and d) the control piston has a pressure part, da) which is embedded in an embedding region with an outer casing surface into an inner casing surface of an end-side recess of the valve housing in the valve housing and db) on which an actuator for generating a displacement of the control piston acts, e) at least one of the outer or inner casing surface has at least one partial region, which has a smaller stiffness and is less resistant to deformation in a radial direction than another partial region.