| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve capable of achieving both of atomization of fluid spray and improvement of a degree of freedom in designing spray shape, penetration force, distribution of injection amount, and spraying direction.SOLUTION: In a fuel injection valve 1, at least one injection hole is a switching injection hole 12B in which injected spray is elliptical switching spray 32A and directions of a long axis and a short axis are changed and deformed by an axis-switching phenomenon, and a plurality of other injection holes excluding the switching injection hole 12B are aggregate injection holes 12A forming aggregate spray 40 aggregated by the Coanda effect acting between single sprays 30A, 31A. The entire spray 50 is formed by aggregating the aggregate spray 40 before convergence in which the center or the center of gravity of a distribution of injection amounts of each of aggregated single sprays 30A, 31A reaches the center or the center of gravity of the aggregate spray 40, and the switching spray 32A by the Coanda effect. |
