Patent ID: 7124741

Claim:
Method for controlling an injector ( 2 ) with verification that plunger movement has occurred; the method providing application of a time-variable voltage (Vinj) to the terminals ( 5 , 6 ) of a drive circuit ( 4 ) of the injector ( 2 ) in order to cause a current wave (Iinj) to flow through said drive circuit ( 4 ); the method being characterised by detection of a verification voltage (Vv) between the terminals ( 5 , 6 ) of the drive circuit ( 4 ) once the current (Iinj) through the drive circuit ( 4 ) has died away at the end of the injection phase, measurement of a verification time (Tv) during which the verification voltage (Vv) is greater than a first predetermined threshold value (SVv) and diagnosis of the absence of plunger movement if the verification time (Tv) is less than a second predetermined threshold value (STv).