Injection control device

An injection control device for controlling fuel injection by driving a fuel injection valve with a current to supply a fuel to an internal combustion engine, the injection control device comprising:

• a current detection unit that detects the current flowing through the fuel injection valve;
• and
• a current area correction control unit that performs current area correction for correcting and calculating, based on an energization current profile showing a relationship between an energization time and an energization current to obtain an integrated energization current value corresponding to a fuel injection amount command value, an area correction amount of an energization time to equalize the integrated energization current value of the energization current profile and an integrated current value of the current detected by the current detection unit according to a difference between the integrated energization current value of the energization current profile and the integrated current value of the current, wherein:
• the current area correction control unit is configured to obtain the integrated current value of the current based on an attainment time from a start of energization of the fuel injection valve to an attainment of each of a plurality of reference current values,
• the injection control device further comprising:
• a reference current value correction unit that controls a storage unit to store a reference attainment time from the start of energization of the fuel injection valve to an attainment of each of the plurality of reference current values, and corrects each reference current value based on a difference between a respective one of the reference attainment times and a detected attainment time from the start of energization of the fuel injection valve to the attainment of the reference current value at a time of actual drive.