Abstract: A fuel injector for fuel-injection systems of internal combustion engines which includes an elongated, axially running, thin-walled, non-magnetic sleeve. At its downstream end, the sleeve has a bottom section, which runs substantially normal to the otherwise axial extent of the sleeve along a longitudinal valve axis. A valve needle, which is securely joined to an armature and a valve-closure member, can move axially within a feed-through opening of the sleeve. The valve-closure member cooperates with a valve-seat surface provided on a valve-seat body, the valve-seat body being pressed into the sleeve and likewise abutting, for example, on the bottom section of the sleeve. The sleeve constituted as a drawn sheet-metal part extends axially over more than half of the axial length of the fuel injector. The fuel injector is suited for applications in fuel-injection systems of mixture-compressing internal combustion engines having externally supplied ignition.

Abstract: The invention relates to a fuel injector for fuel-injection systems of internal combustion engines, in which is provided an elongated, axially running, thin-walled, non-magnetic sleeve (12). At its downstream end, the sleeve (12) has a bottom section (20), which runs substantially normal to the otherwise axial extent of the sleeve (12) along a longitudinal valve axis (10). A valve needle (28), which is securely joined to an armature (24) and a valve-closure member (30), can move axially within a feed-through opening (21) of the sleeve (12). The valve-closure member (30) cooperates with a valve-seat surface (35) provided on a valve-seat body (25), the valve-seat body (25) being pressed into the sleeve (12) and likewise abutting, for example, on the bottom section (20) of the sleeve (12). The sleeve (12) constituted as a drawn sheet-metal part extends axially over more than half of the axial length of the fuel injector.