| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device having a simplified component for independently driving first and second valve members to displacement of an actuator. Ž<P>SOLUTION: This fuel injection device has a first hydraulic chamber 201 arranged between the first valve member 121 and the actuator 30 and making hydraulic pressure act in the valve opening direction of the first valve member by a pressure increase in the inside hydraulic pressure by the displacement of the actuator, a second hydraulic chamber 202 arranged between the second valve member 122 and the actuator and making the hydraulic pressure act in the valve opening direction of the second valve member by pressure reduction in the inside hydraulic pressure by the displacement of the actuator, and a control device 300 having a driving circuit 302 for controlling charge-discharge for charging and discharging to the actuator. The driving circuit 302 controls one of charge/discharge when opening the first valve member with an intermediate position among a displacement position range displaced by the expansion of the actuator as an initial position, displaces its displacement position in one direction from the initial position, controls the other of charge/discharge when opening the second valve member, and displaces its displacement position in the other direction from the initial position. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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