Patent ID: 6712295
Filing Date: 2004-03-30
Classification: F02M

Abstract:
A fuel injection valve for internal combustion engines, having a valve body (3) in which, in a bore (7), a valve member (10) is longitudinally displaceable counter to a closing force by subjection of a pressure shoulder (16) to pressure by fuel, and by means of the longitudinal motion controls at least one injection opening (22), and having a valve holding body (1), which is braced in the axial direction by means of a lock nut (5) against the valve body (3), wherein the lock nut (5) has a female thread (44) which engages a male thread (42) that is embodied on an outer jacket face of the valve holding body (1) or an outer jacket face of the valve body (3) and has a longitudinal axis (8), and having an inlet conduit (12) extending in the valve holding body (1) and in the valve body (3), through which conduit, fuel can be carried at high pressure to the at least one injection opening (22) by means of a contact face, embodied as a high-pressure sealing face (30) of the valve body (3) on the valve holding body (1), the improvement wherein contact flanks (50; 52) of the female thread (44) and the male thread (42), respectively, are pressed against one another to effect bracing of the valve body (3) against the valve holding body (1), the contact flanks (50; 52) being embodied at least approximately perpendicular to the longitudinal axis (8) which is surrounded by the male thread (42) and the female thread (44).