| 摘要 |
PROBLEM TO BE SOLVED: To prevent fuel leakage during operation by improving a fuel injection valve and sufficiently enhancing sealability in a seat contact place of a valve needle and a valve seat.SOLUTION: A fuel injection valve 1 for directly injecting fuel into a combustion chamber of an internal combustion engine is provided with an actuator 28 for operating a valve needle 3. The valve needle 3 has a valve closing body 4 at an injection side end part. The valve closing body works together with a valve seat surface 6 formed on a valve seat body 5 to form a seal seat in a seat contact place 23. The valve seat body 5 and/or the valve closing body 4 include an element for reducing at least one rigidity. |
