Patent · US Active

Fuel injector

US8656591B2 · kind B2 · utility

1Cited by

25References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Manfred Roessler · Manhattan Beach, US
Achim Degel · Mühlacker, DE
Rolf Keller · Rutesheim, DE
Markus Gesk · Waldbronn, DE
Guido Pilgram · Schwieberdingen, DE
Bernd Einwiller · Freudental, DE
Norbert Keim · Besigheim, DE
Michael Lingner · Düsseldorf, DE

Key dates

Filing date	Aug 25, 2011
Grant date	Feb 25, 2014
Priority date	—
Expiry date	Mar 15, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49982
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injector for fuel injection systems of internal combustion engines includes a solenoid coil; an armature acted upon in a closing direction by a restoring spring; and a valve needle, which is connected to the armature in force-locking manner and on which a valve-closure member is formed, which forms a sealing seat together with a valve seat surface. The armature strikes against a stop face of an inner pole of the solenoid coil by way of a stop face, and the armature stop face is provided with a coating. The coating has a surface structure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.