FUEL INJECTOR DRIVE DEVICE

摘要

PROBLEM TO BE SOLVED: To detect injection quantity variations among fuel injectors corresponding to a plurality of cylinders and correct the injection quantity variations while suppressing the calculation load of a drive device and performance necessary for a pressure sensor.SOLUTION: A fuel injector drive device drives a movable valve by carrying a current to a solenoid of each of a plurality of fuel injectors opening or closing fuel channels for set current-carrying time so as to reach a flowing current and controlling each fuel injector to inject a predetermined quantity of fuel, and corrects the set current-carrying time or the flowing current on the basis of a pressure detection value from a pressure sensor attached to a fuel pipe upstream of the fuel injectors.