| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive control device of an electromagnetic valve which can enhance the control accuracy of an actual valve-opening time of the electromagnetic valve or an actual valve-closing time by further exactly acquiring an actual operation start time of the electromagnetic valve (a valve-opening operation start time in a constantly-closed type, and a valve-closing operation start time in a constantly-opened type).SOLUTION: Partial lift drive (the supply of a drive current so that a lift amount LFT becomes smaller than a maximum lift amount LFTMAX) is performed by supplying the drive current to a fuel injection valve by using a test drive control signal SDTST which is relatively short in a valve-opening command tine, an estimation operation start time tSE being an estimation value of a valve-opening operation start time tS is calculated on the basis of an operation finish time tE which is detected at that time, and the valve-opening time control (fuel injection amount control) of the fuel injection valve is performed by using the estimation operation start time tSE. |
