| 摘要 |
The invention concerns a fuel injection device for internal combustion engine. The fuel injection device for internal combustion engine comprises an injecting head integral with the end of a needle (3) mobile in translation inside an injection housing (4) supplied with high pressure fuel and having a seat for the injecting head, and a piezoelectric or magnetoresistive vibratory element (5) capable, when it is energized, to act on the needle (3), maintained by a return spring (10), to cause same to vibrate, such that the injecting head co-operates with its seat to periodically open and close a passage for fuel injection. The device comprises means for controlling (16, 17) the movement of the needle in translation, countering the return spring (10), independent of the vibratory element (5). |
