Patent Number: 7,086,614

Title: Fuel injector

Abstract: A fuel injector is described for fuel injection systems in internal combustion engines that includes a magnet coil, an armature that is acted upon in a closing direction by a restoring spring, and a valve needle that is non-positively engaged with armature for actuating a valve closing body, which together with a valve seat surface forms a sealing seat, and armature with an inlet-side armature surface striking internal pole. A choke point is provided on inlet-side armature surface, and is formed by an annular, stepped prominence on inlet-side armature surface.

Inventors: Stier; Hubert (Asperg, DE), Hohl; Guenther (Stuttgart, DE), Keim; Norbert (Loechgau, DE)

Assignee: Robert Bosch GmbH

International Classification: B05B 1/30 (20060101); F02M 51/00 (20060101)

Expiration Date: 8/08/02018