| 摘要 |
PURPOSE: An injector for regulating pressure with a booster is provided to improve performance of the injector by installing the injector in the cylinder head of the direction injection internal combustion engine and by reducing reaction time forming high pressure in the booster. CONSTITUTION: An injector(1) for injecting fuel into a combustion chamber of an internal combustion engine has a nozzle needle(30) having a nozzle chamber(29) with a nozzle inlet, a booster(9) with a pressure chamber(16), and two control valves(18,37) arranged in the booster. The control valve releases and closes the nozzle inlet to the nozzle chamber of the nozzle needle. High pressure is supplied to control chambers(13) and the pressure chamber through a high pressure line(4), and provided on nozzle inlet pipes(20,28). The control chamber of the booster is converted by control valves.
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