| 摘要 |
PROBLEM TO BE SOLVED: To suppress increase in a gap on the outer periphery side of a nozzle needle by fuel pressure with an easy-to-process structure. SOLUTION: A cylindrical guide 23 for slidably holding the nozzle needle 22 is disposed between a nozzle body 21 and the nozzle needle 22. A cylindrical pressure inlet space 26 communicating with a high-pressure fuel passage 212 is provided between the nozzle body 21 and a guide 23. According to this, the pressure on the inner periphery side of the guide 23 is substantially equalized to the pressure on the outer periphery side of the guide 23 to prevent distortion of the guide 23, the increase in gap of a sliding portion between the guide 23 and the nozzle needle 22 by fuel pressure can be suppressed. COPYRIGHT: (C)2011,JPO&INPIT
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