Loading patent…
AssigneeRobert Bosch GmbH
InventorsUdo Diehl, Karsten Mischker, Rainer Walter, Stefan Franzl, Volker Beuche, Stefan Reimer, Ulrich Kappenstein
Estimating the term…
A valve control device for an internal combustion engine having a gas exchange valve for controlling an inlet and/or outlet cross section in the combustion chamber of the engine. The valve control device has an axially movable gas exchange valve member whose valve member shaft is coupled to a piston rod to a differential piston that can be hydraulically actuated. The differential piston is embodied as two piston parts, wherein the two piston parts are disposed in relation to one another in such a way that they are operatively connected to each other in the axial direction and can execute a radial relative movement in relation to each other.
A valve control device for an internal combustion engine comprising a gas exchange valve (1) for controlling an inlet and/or outlet cross section (13) on a combustion chamber of the engine, the gas exchange valve has an axially movable gas exchange valve member (3) with a valve member shaft (15) which is coupled to a piston rod (16), the gas exchange valve is embodied as one piece with the gas exchange valve member shaft (15), coupled to a differential piston (18) that is hydraulically actuated in a cylindrical housing (17), the differential piston (18) is embodied as two parts wherein the two differential piston parts are disposed in relation to one another in such a way that the two differential piston parts are operatively connected to each other in an axial direction and can execute a radial relative movement in relation to each other.
Dependencies are inferred from the claim text.