| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device with a simple structure, which can be simply controlled. <P>SOLUTION: The fuel injection device includes: an injection needle 3 blocking and opening a fuel outlet 2 communicating to an accumulated fuel source; a shell 4 covering the outside of the fuel outlet 2; a plurality of fuel injection holes 5 opened to the shell 4 along a normal line of the shell 4; a plurality of flow control needles 6 provided so as to be freely inserted and extracted with respect to the respective fuel injection holes 5 from the inside of the shell 4 to increase and decrease fuel passing areas of the fuel injection holes 5; and a piezoelectric element 7 driving the flow control needles 6 to insert and extract the needles with respect to the fuel injection holes 5. <P>COPYRIGHT: (C)2013,JPO&INPIT |
