FUEL INJECTION CONTROL APPARATUS

The present invention provides a fuel injection control apparatus that can suppress variations in fuel injection amounts in a very small fuel injection region. For this purpose, the fuel injection control apparatus includes a fixed injection pulse generator and a drive current interruption unit . The fixed injection pulse generator generates a fixed injection pulse having a valve opening timing at which a drive current is supplied to an electromagnetic coil in an electromagnetic fuel injection valve and a first valve closing timing at which the drive current to the electromagnetic coil is interrupted. Within a period in which the fixed injection pulse is generated, the drive current interruption unit determines an electric energy amount of a drive current supplied to the electromagnetic coil in response to a valve opening timing of the fixed injection pulse. When this electric energy amount reaches a preset, predetermined target electrical energy amount, the drive current interruption unit generates a second valve closing timing of the fixed injection pulse different from the first valve closing timing and then interrupts the drive current supplied to the electromagnetic coil before the first valve closing timing.