Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
Fuel injection valve
An object of the present invention is to further improve the characteristic of the fuel spray of a fuel injection valve which has a plurality of stepped injection holes having a hole diameter of an outlet side injection hole larger than a hole diameter of an inlet side injection hole and which injects fuel from the stepped injection holes into a cylinder of an internal combustion engine. A cutout portion, which guides a flow of gas flowing into an outlet side injection hole from a lateral position of a fuel outlet of the outlet side injection hole during fuel injection, in a circumferential direction of the outlet side injection hole, is provided for at least one of both lateral portions between which the fuel outlet is interposed along with an arrangement direction of a plurality of injection holes, on a circumferential edge of the fuel outlet of the outlet side injection hole, in relation to at lease some of the injection holes of a fuel injection valve having the plurality of stepped injection holes.
Toyota Jidosha Kabushiki Kaisha Kabushiki Kaisha Toyota Jidoshokki
F F F
F02M F02M F02M
inventional inventional inventional
Hisaki Tsutomu Noriyuki
Ito Kawae Takada