Patent ID: 9726131
Date: 2017-08-08
CPC Classifications: F02M

Claim:
1. A fuel injection valve comprising a valve element for opening and closing a valve seat, the valve element being driven upon reception of an operation signal from a control unit and causing fuel to be injected from a plurality of injection holes formed on an injection hole plate having a projection formed thereon, the injection hole plate mounted on a downstream side of the valve seat, wherein said projection which projects away from the downstream side of the valve seat so as to extend substantially in parallel with a distal end of the valve element is formed at a center of the injection hole plate, and a flat portion is formed outside of the projection, wherein the relation between the minimum distance r from the distal end of the valve element to the center of the projection of the injection hole plate with the valve opened and the diameter d of an injection hole entrance is r<d, wherein the injection hole entrance of each of the injection holes are arranged on the flat portion of the injection hole plate and inside a minimum inner diameter of the valve seat, and wherein a periphery of the projection creates a virtual circle on the injection hole plate and the injection hole entrance of each of the injection holes is provided on the injection hole plate outside of the virtual circle; wherein the plurality of injection holes are located along the injection hole plate in a width direction, and wherein an inner wall of a seat portion of the valve seat had a linear angled edge which is angled from an upstream point to a downstream point with respect to a thickness direction of the flat portion of the injection hole plate such that the linear angled edge extends in an oblique direction with respect to the thickness direction of the flat portion of the injection hole plate and the width direction of the injection hole plate, and the downstream point of the linear angled edge is joined to the injection plate at a connection location, and wherein the connection location is located exterior to the plurality of injection holes in the width direction of the injection hole plate.