| 摘要 |
To improve accuracy of injection amount by a fuel injection valve, open/close operation of a valve body needs to be performed promptly. This needs a configuration in which, immediately after starting movement of a movable member, fluid force generated at a seat portion of the valve body is not transmitted. At the same time, it is required to suppress occurrence of the cohesion phenomenon between an end surface of an anchor and an end surface of a fixed core, and then, to prevent sticking. To solve the above-described problem, an electromagnetic fuel injection valve of the present invention has a configuration in which a valve body includes a second valve body configured to abut against an anchor at a time of valve-close, a first valve body that abuts against the anchor in a course of valve-open. In this configuration, the second valve abuts against a stroke stopper arranged on an inner periphery of a fixed core at a time of valve-open. In this configuration, the lengths of first valve and the second valve are prescribed such that a gap can be obtained without causing the fixed core and the anchor to abut directly against each other at the time of valve-open, and plating for the fixed core and the anchor is discontinued. |
