Method for operating a valve

摘要

In a method for operating a valve, one valve element of the valve being able to be moved from a first position into a second position by activating an electrically actuatable actuator, the actuator is activated at least once in a first time interval, and is thereafter not activated in a second time interval, and a signal characterizing a strike of the valve element at the first position is ascertained at electrical terminals of the actuator. During the process, an activation energy of the actuator is gradually modified, and a threshold value of the activation energy at which the valve element is just able or is just no longer able to lift is ascertained.

主权项

1. A method for operating a valve having one valve element configured to be selectively moved from a first position into a second position by activating an electrically actuatable actuator, the method comprising:
setting a first activation energy for the actuator, which enables valve element to lift from its sealing seat; actuating the actuator at least once in a first time interval prior to an initial time; subsequently not activating the actuator in a second time interval following the initial time; ascertaining, at electrical terminals of the actuator, a signal characterizing a strike of the valve element at the first position at a strike time; and gradually modifying an activation energy of the actuator, so that the strike time occurs gradually sooner, and ascertaining a threshold value of the activation energy at which the valve element is one of just able or just no longer able to lift from the first position; wherein the first position corresponds to a closed position of the valve and the second position corresponds to an opened position of the valve, and wherein an activation period of the electrically actuatable actuator is held at a constant level, and an activation voltage of the electrically actuatable actuator is gradually modified.