Patent ID: 9644588
Date: 2017-05-09
CPC Classifications: F02M,F16C,F16K

Claim:
1. A fuel metering unit for regulating the delivery quantity on the intake side of a high-pressure fuel pump of a fuel injection system for an internal combustion engine, in which the fuel metering unit has a regulating valve that is actuated by an electromagnet and that has a valve member, the electromagnet having an armature and an armature bolt, the armature bolt being supported axially displaceably in at least one bearing bush, wherein the at least one bearing bush is embodied as a solid, undivided metal component, the bearing bush includes a bearing face in which the armature bolt is guided, the bearing face is at least slightly convexly curved in an axial direction of a longitudinal axis of the armature bolt, wherein, in the bearing bush, the bearing face is adjoined in the axial direction of the armature bolt by noncylindrical faces, wherein the noncylindrical faces are embodied as conical or curved, an inner diameter of the bearing bush increases in the axial direction moving away from the bearing face, and the bearing face is shorter than each of the noncylindrical faces.