| 摘要 |
PROBLEM TO BE SOLVED: To prevent increase in required driving force for opening a valve even though injecting pressure and temperature of fuel are high, while avoiding temperature increase of an electromagnetic coil. SOLUTION: A valve body comprises a needle valve 6 and a plate-type valve 7, which is opposed to a seat portion 4 of an injection nozzle 3 abutting to the leading end portion of the needle valve 6. Furthermore, with a valve guide 13 guiding the intermediate portion of the needle valve 6 serving to be a partition wall, a first chamber 14 on the leading end side of the needle valve 6 with respect to the valve guide 13 and a second chamber 15 on the base end side with respect to the valve guide 13 are formed. High pressure high temperature fuel is introduced to the first chamber 14, while low pressure low temperature fuel is introduced to the second chamber 15. |
