Patent ID: 8567701
Filing Date: 2013-10-29
Classification: F02M

Abstract:
1. A fuel injection valve in which a valve body for opening and closing a valve seat is provided, the fuel injection valve is configured to receive an operation signal from a control device so as to operate the valve body so that a fuel passes a gap between the valve body and a valve seat portion, the fuel injection valve comprising: a plurality of injection holes provided in an injection hole plate mounted in a valve seat opening portion at the downstream side of the valve seat, the injection hole plate is disposed in such a way that an extended line along the plane of the valve seat portion of the valve seat whose diameter is gradually reduced in the downstream direction and an upstream plane of the injection hole plate intersect each other so that a virtual circle is formed; and a plurality of fuel chambers formed by recessing part of the upstream side of the injection hole plate at a plurality of positions along the valve seat opening portion, each of the fuel chambers having a shape, the halves of which are symmetric with each other with respect to a line that radially extends from the center of the injection hole plate, and the fuel chambers are disposed in a place that ranges from the inside of the virtual circle to the outside of the inner circumference of the valve seat opening portion, wherein in each of the fuel chambers, two injection holes are arranged outside the inner circumference of the valve seat opening portion in such a way as to flank the radial center line of the fuel chamber.