Method and apparatus to dampen the valve lift of a spring-loaded valve

摘要

The method involves detecting the linear displacement of a valve closure element (6) using a sensor (16), and processing the sensor signals (19) in an electronic evaluation unit (12) to determine pref. displacement, speed or acceleration and deviations between a demanded motion and an actual motion of the closure element. The determined deviation is converted according to a defined characteristic into a control value (20) for a damping element (11) variable by an external energy source. The control value is applied to the damping element. The actual motion of the closure element can be compared with a characteristic field of values for the demanded movement.