Patent ID: 6681732
Filing Date: 2004-01-27
Classification: F01L

Abstract:
A control device for switching an intake or exhaust valve of an internal combustion engine, the control device comprising:a control valve comprising a control valve piston configured to control flow of a hydraulic medium from a pressure line to the intake or exhaust valve; at least one actuating element correlated with the intake or exhaust valve and having a first end acted on by the hydraulic medium; at least one damping device interacting with the at least one actuating element and arranged at a second end of the actuating element opposite the first end, wherein the at least one damping device is configured to exert a damping force onto the actuating element counteracting a force exerted by the hydraulic medium; wherein the control valve has a first pressure chamber located at a first end of the control valve piston and a second pressure chamber communicating with the first pressure chamber via a bore, wherein a valve element is provided and has a closing position for closing off the bore.