Patent ID: 6755161
Filing Date: 2004-06-29
Classification: F01L,H02K

Abstract:
A gas exchange valve drive for a valve-controlled combustion engine witha hollow cylindrical rotor (16) to be coupled with a valve member (12) and a stator (18), wherein the rotor (16) comprises permanent-magnetic rings (30) concentrically arranged one above the other, the stator (18) is at least partially constructed of a soft magnetic material and comprises at least one tooth (22) facing towards the rotor (16), the stator (18) comprises a radially inner magnetically conductive area (50) and a radially outer magnetically conductive area (52), with the rings (30) of the rotor (16) being arranged between the inner area (50) and the outer area (52) of the stator (18), and the outer area (52) of the stator (18) in at least partial section (54) is designed with a C-shaped cross-section and comprises at least one stator coil (28).