| 摘要 |
PROBLEM TO BE SOLVED: To improve responsiveness of operation of a piston, in a fuel injection valve opened/closed by operating the piston to change pressure in a control pressure chamber. SOLUTION: In the fuel injection valve 100, the piston 5 is operated by an actuator to change the capacity of the control pressure chamber 10, and change the pressure in the control pressure chamber 10 to open/close the injection valve. The control pressure chamber 10 is constituted of an inner wall face which is formed in a body 12 of the fuel injection valve housing the piston 5 and an end face of the piston 5. In the control pressure chamber 10, a seal member 9 in a shape of a belleville spring is disposed to abut on the inner wall surface and the end face of the piston 5. COPYRIGHT: (C)2006,JPO&NCIPI
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