Patent · US Expired

Fuel injection valve

US6517014B1 · kind B1 · utility

2Cited by

4References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Ruehle · Ditzingen, DE
Hubert Stier · Asperg, DE
Matthias Boee · Ludwigsburg, DE
Guenther Hohl · Stuttgart, DE
Norbert Keim · Besigheim, DE

Key dates

Filing date	Jul 31, 2001
Grant date	Feb 11, 2003
Priority date	—
Expiry date	Jul 31, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M51/0603
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injector, particularly an injector for fuel-injection systems of internal combustion engines, has a piezoelectric or magnetostrictive actuator and a valve-closure member which is operable by the actuator with the aid of a valve needle and which cooperates with a valve-seat surface to form a sealing seat. The actuator, at a first end face, abuts against a supporting member that has at least one cut-out through which at least one segment of an actuating sleeve projects. The actuating sleeve, at a first end, acts upon the valve needle, and at a second end, embraces the actuator at a second end face of the actuator facing away from the first end face of the actuator.

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