Patent ID: 6948462

Claim:
A device for controlling at least one gas exchange valve allocated to a combustion cylinder of an internal combustion engine, comprising: a hydraulic actuator for performing a valve actuation; and a high-pressure pump that charges the hydraulic actuator with a pressure medium under high pressure, wherein: the high-pressure pump includes a control-sleeve pump provided with a pump plunger that executes a stroke motion and that limits a pump chamber, the high-pressure pump includes a spool valve that surrounds the pump plunger, one of the pump plunger and the spool valve includes a control groove that runs obliquely to a stroke direction of the pump plunger, another one of the pump plunger and the spool valve includes a spill opening that works together with the control groove so that when the spill opening and the control groove overlap, a relief of pressure of the pump chamber is achieved, the pump plunger and the spool valve are able to be rotated relative to one another, and the spool valve is able to be displaced relative to the pump plunger, for a controlling of a phase position and a duration of an activation of the at least one gas exchange valve through an activation and deactivation of the hydraulic actuator.