Method and device for controlling a valve
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United States of America Patent
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Sep 20, 2016
Grant Date -
Aug 7, 2014
app pub date -
May 3, 2012
filing date -
May 4, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method is disclosed for controlling a valve having a spring with a spring force, an actuator with an actuator force opposing the spring force, and a pin that is actuated by the actuator, a seal element that can be coupled with the pin, and a seal seat, the valve being closed when the seal element sits against the seal seat. The method includes determining an expected natural opening time when the seal element is lifted off the seal seat based on a pressure difference in front and behind the valve, impressing a specified current on the actuator at a point in time within a specified interval prior to the natural opening time, the seal element sitting against the seal seat at the point in time such that the pin contacts the seal element and the actuator force matches the spring force, which is reduced by a specified value.
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