| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection device having high valve closing responsiveness at low costs. SOLUTION: When a valve opening driving pulse is turned on by a command of an ECU, current-carrying is carried out to a first coil part 31, a movable core 22 is attracted by a first fixed core 31, and a nozzle needle 21 is separated from a valve seat 13, and then, a valve is opened. When a valve closing driving pulse is turned on before a time TX than the valve closing driving pulse is turned on, current-carrying is carried out to a second coil part 42, and then, force for attracting the movable core 22 by the second fixed core 41 is generated. After valve closing is started, energizing force of a valve closing direction is rapidly increased, time delay from a time when valve closing is started to a time when the valve closing is completed, is suppressed, and thereby, valve closing responsiveness is improved.
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