| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection device for improving the atomization effect of injecting fuel. SOLUTION: A bolt fastening Langevin 11 is arranged inside a body part 4. The bolt fastening Langevin 11 has a cylindrical horn 12, a disk-shaped flange part 13 arranged in the horn 12 and a plurality of annular ring-shaped piezoelectric elements 14. The flange part 13 is fixed to the body part 4 by being nipped by an edge part 2b1 of a nozzle part 2b and a lower end part of an upper casing 3. The piezoelectric elements 14 are fixed by a bolt to the flange part 13 so that the horn 12 is inserted into a hole of the piezoelectric elements 14. The horn 12 vibrates by the piezoelectric elements 14, but the flange part 13 is arranged in a position corresponding to a node of this vibration. COPYRIGHT: (C)2011,JPO&INPIT
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