Fuel injection valve, for the direct fuel injection at an IC motor, has a guide sleeve for the armature return spring, within an axial recess at the valve needle to give a force fit bond with the armature and a firm seating for the spring

摘要

The fuel injection valve (1), for an internal combustion motor, has a magnetic coil (10) which acts on an armature (20) against a return spring (23) with the valve needle (3), to form the valve unit with an axial movement. The return spring is at a guide sleeve (28), within an axial recess (33) at the valve needle. The sleeve grips through the armature, to give a force fit bond between the valve needle and the armature.