Valve e.g. exhaust valve, controlling device for heat engine of motor vehicle, has electromagnets associated with control unit, which moves activating unit to extreme closed position if energy quantity is higher than preset threshold

摘要

The device has two electromagnets (14, 15) associated with a control unit (23) to move a mobile activating unit (8) towards an extreme opening or closed positions of a valve (1). The unit (23) determines energy quantity required for the electromagnets to the opening position at the time of oscillation towards the opening position. The unit (23) feeds the electromagnets to stop the oscillation and to bring the unit (8) towards the opening position if the quantity is equal to a preset threshold. The unit (23) moves the unit (8) to the closed position if the quantity is higher than the threshold. An independent claim is also included for a method for controlling a valve between an opening position and a closed position.