Patent ID: 6283389
Filing Date: 2001-09-04
Classification: F02M

Abstract:
In a fuel injection valve for internal combustion engines having a valve member (7) that is guided so that the valve member moves axially in a bore (5) of a valve body (1), wherein the end of the valve member oriented toward a combustion chamber has a valve sealing face (9) which cooperates with a valve seat (11) provided on an end of the bore (5) oriented toward the combustion chamber in order to control a through flow of fuel to at least one injection opening (13) and into the combustion chamber of the engine and having a guide surface (23) at an end of the valve member (7) remote from the combustion chamber, the guide surface guides the valve member (7) so that the valve member moves in a sliding fashion in the bore (5), the improvement comprising a plurality of recesses provided in the guide surface (23) of the valve member (7), in which the recesses are embodied as axially spaced grooves (25) that extend lateral to the axis of the valve member (7) to hydraulically center the valve member (7) in the bore (5), and the grooves (25) have a radius-shaped cross section.