Fuel injection valve for internal combustion engines has two main parts, tensioning nut with screw on one part to enables it to press against the second and matching collar and surfaces on second part with friction-reducing coating

摘要

Fuel injection valve for internal combustion engines has casing containing two main parts. A tensioning nut (3) around the second part (5) has a screw (20) with which it grasps the corresponding opposite screw (18) on the first part (2) When the nut is screwed into the opposite screw, the second part moves against the first part. The tensioning nut adjoins with its collar (32) the matching surface (30) of the second part. The matching collar and/or surfaces of the second part have a friction-reducing coating (35).