| 摘要 |
PURPOSE:To improve sealability so better as well as to reduce the cost of production, by interposing a valve body between a main fuel needle and a sub-fuel needle, while sealing it with seal oil to be fed out of a seal oil feeding port. CONSTITUTION:There is provided with a sub-fuel needle 6 which slides upward by dint of pressure in sub-fuel and opens a sub-fuel injection passage 12. Also there is provided with a main fuel needle 8 which slides upward by dint of pressure of needle control oil to be fed out of a needle control oil feeding port 5d and opens a main fuel injection passage 10. A seal is performed by seal oil to be fed out of the seal oil feeding port 5m installed in a valve body 5. Thus, no only sealability is improve but also the cost of production is reducible. |
