METHOD OF DETERMINING A CLEARANCE

摘要

The invention relates to a method of determining a clearance between a valve (1) stem (3) of a heat engine (2) and a mobile element (8) of an electromagnetic actuator (7) comprising electromagnetic means (14, 15) which are used to move said mobile element between an end valve open position and an end valve closed position. The aforementioned electromagnetic movement means are controlled using automatic control means according to a set current. The inventive method comprises steps consisting in controlling the electromagnetic means in order to: obtain an essentially constant movement speed for the aforementioned mobile element moving between the end closed position and the end open position, obtain the values of the set electrical characteristic for intermediary positions of the mobile element and detect an intermediary position for which the set electrical characteristic undergoes a sudden variation.