Gas exchange valve drive for a valve-controlled combustion engine

Abstract

The gas exchange valve drive for a valve-controlled combustion engine has a hollow cylindrical rotor to be coupled with a valve member and a stator, with the rotor comprising permanent-magnetic rings concentrically arranged one above the other, the stator being at least partially constructed of a soft magnetic material and comprising at least one tooth facing towards the rotor, the stator comprising a radially inner magnetically conductive area and a radially outer magnetically conductive area, with the rings of the rotor being arranged between the inner area and the outer area of the stator, and the outer area of the stator in at least one partial section being designed with a C-shaped cross-section and comprising at least one stator coil. In the radially inner magnetically conductive area of the stator and/or in the radially outer magnetically conductive area of the stator at least one tooth is formed in the direction of movement of the rotor, whose dimension in the direction of movement of the rotor is essentially the same as the dimension of a permanent-magnetic ring in the direction of movement of the rotor, so that in a predetermined position of the rotor the at least one tooth of the stator is in alignment with one permanent-magnetic ring.

Dependencies are inferred from the claim text.