Patent ID: 7044092

Claim:
A method for controlling an electrohydraulic unit ( 1 ) for actuating the valves ( 2 ) of an endothermic engine (M), in which the electrohydraulic unit ( 1 ) comprises a hydraulic actuator ( 17 ) for opening a respective valve ( 2 ) with a pressurized liquid, and a spring ( 29 ) that is antagonistic to the hydraulic actuator ( 17 ) in order to close the valve ( 2 ); wherein the connection time (t spo ; t spc ; t spoc ) between the hydraulic actuator ( 17 ) and a first branch ( 9 ) containing said pressurized liquid is controlled as a function of a predetermined time (t open t close ; t oc ) characteristic of the electrohydraulic unit: said connection time (t spo ; t spc ; t spoc ) being defined and compared with said predetermined time (t open t close ; t oc ); an error signal—E o ; E c ; E oc ) being output when the difference between the predetermined time (t open t close ; t oc ) exceeds a defined threshold (K; H; J).