Valve adjuster, e.g. for choke flap valves, exhaust gas feedback valves, has magnetic adjustment element whose movement increases force between restoring device magnetic elements

摘要

The device has an adjustment element (3) in a housing movable rotationally or linearly from a rest position to an adjustment position by a drive and a restoring device (6) with two opposing magnetic elements (11,12) of identical polarity. The first element (11) interacts with the adjustment element and the second is mounted in a housing part (2) so the magnetic force acting between the elements is increased by movement of the adjustment element.