Patent ID: 11873775
Assignee: HITACHI ASTEMO, LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A fuel injection control device that controls a plurality of fuel injection valves including a coil for energization, the device comprising:
a valve body operation time detection unit that, for at least one of the fuel injection valves, detects a valve closing completion time from an end of energization of the fuel injection valve to completion of valve closing of a valve body of the fuel injection valve;
a drive current correction unit that, for the at least one fuel injection valve, corrects a drive current parameter of the fuel injection valve based on the valve closing completion time;
an injection pulse width correction unit that, for the at least one fuel injection valve, corrects an energization time of the fuel injection valve based on the valve closing completion time; and
a correction method selection unit that determines a state of an engine and selects at least one of the drive current correction unit and the injection pulse width correction unit to execute correction based on the determined state of the engine.