| 摘要 |
PROBLEM TO BE SOLVED: To secure controllability of an injector by minimizing a valve closure delay in the injector, even when a fuel injection signal becomes OFF in the middle of transfer of an injector driving current from a valve opening current to a holding current, in injector control in a fuel injection system. SOLUTION: This injector control device 1A is arranged in the fuel injection system of an internal combustion engine, and is connected to the injector 2, for controlling the injector 2 for opening and closing in the predetermined timing, while adjusting output of the injector driving current by switching ON/OFF of an injection time control signal by a control means. Time required up to transfer from the valve opening current Ip to the holding current Ih is shortened by promoting fall of the injector driving current, by enabling the control means to perform control for stopping (Tip-off) the injection time control signal for a predetermined time just after finishing the valve opening current Ip. COPYRIGHT: (C)2008,JPO&INPIT
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