| 摘要 |
Provided is a fuel injection valve which can suitably make fuel into a thin film without relying on an increase in the pressure of the fuel, the fuel being ejected from nozzle hole outlets. Thus, the fuel injection valve can satisfactorily promote the atomization of the spray of the fuel. A fuel injection valve (10) is provided with: a fuel path (16) which is formed within the fuel injection valve (10) and through which fuel flows; and a nozzle hole plate (18) which divides the fuel path (16) and an injection space (20) into which fuel is injected, the nozzle hole plate (18) having nozzle holes (22) formed therein, the nozzle holes (22) injecting the fuel from the fuel path (16) toward the injection space (20). Nozzle hole outlet-side grooves (24) are formed in the nozzle hole plate (18) in such a manner that, when the nozzle hole plate (18) is viewed from the outlet side of the nozzle holes (22), each of the nozzle outlet hole-side grooves (24) connects to each of the nozzle holes (22) at a portion (inner wall surface (22b)) which is on the side opposing the main flow direction of the fuel, the main flow direction being oriented toward the nozzle hole (22) along the inner wall surface (18a) of the nozzle hole plate (18). The nozzle hole outlet-side grooves (24) are formed so as to extend in the direction away from the nozzle holes (22). |
