Patent ID: 11359569

Abstract:
An object of the present invention is to promote the stabilization of the fuel injection amount in a fuel injection device in which a valve body and a movable iron core are configured to be relatively displaceable. In a control unit 120 of a fuel injection device 100 which includes a control part that controls the energization time of a current flowing through a coil 108 based on the pulse width of a drive command pulse, the control part is configured to be able to execute control to split a required fuel injection amount for one combustion cycle into portions and inject the portions in a plurality of times. In addition, in injections including a sequence of a preceding drive command pulse Pi1 and a subsequent drive command pulse Pi2, the control part acquires a preceding drive command pulse width Ti1 of the preceding drive command pulse Pi1 and a pulse interval Tint that is the time between the end time te1 of the preceding drive command pulse Pi1 and the start time ts2 of the subsequent drive command pulse Pi2, and corrects the subsequent drive command pulse width Ti2 of the subsequent drive command pulse Pi2 by using the preceding drive command pulse width Ti1 and the pulse interval Tint.