| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in a device executing regeneration control for rapidly falling a coil drive current of a fuel injection valve, wherein when there is a delay period in rising of a regenerative current, there is a risk that desired rapid falling operation cannot be executed because an injector driver control unit detects a low regenerative current during this delay period, determines that the regenerative current is finished to flow, and finishes a rapid falling operation early.SOLUTION: Regardless of a delay period, increase and decrease of the regenerative current are detected, and when a decreasing regenerative current falls below a predetermined value, it is determined that the regeneration control is finished and an injector is made to recover to normal control. |
