Abstract: A fuel injection valve for internal combustion engines, having a valve body that tapers toward the combustion chamber, forming an annular heel, and merges with a valve shaft protruding as far as the inside of the combustion chamber. The fuel injection valve is disposed in a receiving bore, and the diameter of the receiving bore decreases toward the combustion chamber, forming a stop face. In the installed position, the annular heel is pressed against the stop face with the interposition of a sealing disk, and on the side toward the valve retaining body, the sealing disk has an annular rib encompassing it or interrupted at at least one point, and this annular rib surrounds the annular heel and engages an undercut, formed on the outside jacket face of the annular heel, and is thereby joined in captive fashion to the valve body.

Abstract: A method and apparatus for measuring injection bores of fuel injection valves for internal combustion engines, in which the injection valve including the bores to be measured is fastened in a receiving device and the bore is measured with a measuring device. The ascertainment of the location and geometry of the bore to be measured is done by means of an optoelectronic measuring method such as a camera.