Patent ID: 9664161
Date: 2017-05-30
CPC Classifications: F02M,F16K

Claim:
1. Valve assembly for an injection valve, comprising a valve body comprising a central longitudinal axis and a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and releasing the fluid flow through the fluid outlet portion in further positions, an electro-magnetic actuator unit configured to actuate the valve needle, the actuator unit comprising an armature, the armature being axially movable in the cavity and comprising a main body and a flange being axially distanced from the main body, the flange being fixedly coupled to the main body and having an inner surface facing the main body, and a stop element fixedly coupled to the valve needle and arranged in the cavity axially between the main body and the flange of the armature, and an armature spring arranged in the cavity axially between the main body and the flange, and the armature spring providing a force acting on the stop element to bring the stop element in contact with the inner surface of the flange, wherein an overlapping area of the stop element and the inner surface is bounded by an inner contour and an outer contour and an area content enclosed by the outer contour is at least three times as large as an area content enclosed by the inner contour.