Patent ID: 8528842
Filing Date: 2013-09-10
Classification: F02M

Abstract:
1. A fuel injector comprising: an armature cooperating with a solenoid coil, a working air gap being formed between the armature and an inner pole of the solenoid coil; a first flange arranged on a supply-side of the armature, a prestroke gap being formed between the first flange and the armature; and a valve needle joined to the armature by force-locking, wherein a valve-closure member, which forms a sealing seat together with a valve-seat surface, is on the valve needle, and wherein the armature is swingingly supported on the valve needle with a spring, wherein a sleeve is situated downstream of the armature, wherein a second flange, which is joined to the valve needle by force-locking, is positioned inside the sleeve, the second flange capable of fitting entirely inside the sleeve, wherein the sleeve is rigidly connected to the armature such that the sleeve and the armature are moved together during a relative motion of the armature on the valve needle.