| 摘要 |
PROBLEM TO BE SOLVED: To reduce a size of an apparatus by enabling to control a lift speed or a maximum lift of a needle valve. SOLUTION: An accumulator 7 stores fuel, in high-pressure state, supplied from a pump 1 that supplies fuel. The accumulator 7 supplies the fuel to a nozzle chamber 12 of an injector 11. In the injector 11, the fuel is injected from a nozzle hole at a tip of a nozzle when a needle valve 16 lifts to open a nozzle seat portion. In that case, there is constituted so that a lift speed of the needle valve 16 can be controlled (a piezo actuator 32 and a control unit 22). |
