Distribution clearance determining method for e.g. valve of vehicle heat engine, involves detecting intermediate position at which acceleration is equal to zero, and determining value corresponding to distribution clearance

摘要

The method involves displacing a mobile unit (8) from an extreme closing position to an extreme open position. The acceleration of the mobile unit at intermediate positions between the extreme positions is determined by deriving a position signal from a position sensor (16) of the mobile unit. An intermediate position at which the acceleration is equal to zero is detected. A value corresponding to a distribution clearance is determined within a control unit (23) of an actuator (6). The value is transmitted to an external device e.g. diagnostic tool (25).