Patent ID: 6502554
Filing Date: 2003-01-07
Classification: F02M

Abstract:
A fuel injection valve for internal combustion engines comprising a valve member (5) that is guided so that the valve member moves axially in a bore (3) of a valve body (1), and the valve member, on an end oriented toward a combustion chamber of the engine, has a conical valve sealing surface (7), the conical valve sealing surface cooperating with a conical valve seat surface (9) at a closed, combustion chamber end of the bore (3) of the valve body (1), the conical valve sealing surface (7) on the valve member (5) is divided into first and second regions (71, 72) that have different cone angles, at the transition of the first and second regions, a transition region (73) is formed, the transition region is delimited by an upstream and a downstream valve sealing edge (73a and 73b), where the difference between the cone angle of the transition region (73) and the cone angle of the valve seat surface (9) is smaller than the difference between the cone angle of the downstream region (72) and the cone angle of the valve seat surface (9), the inverse seat angle differential, the transition region (73) adjoined on an upstream side by a radial recess (74), which is embodied in the valve member (5) and is delimited by the upstream sealing edge (73a) of the transition region (73) and an edge (75) embodied on the valve body (1).