Patent · US Expired

Fuel injector

US6425376B1 · kind B1 · utility

1Cited by

6References

7Claims

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	Jun 23, 2000
Grant date	Jul 30, 2002
Priority date	—
Expiry date	Jun 23, 2020

Classification

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

Abstract

A fuel injector, especially an injector for fuel-injection systems of internal combustion engines, includes a piezoelectric or magnetostrictive actuator arranged in an actuator space of a valve housing of the fuel injector, the actuator space being sealed from a fuel by a seal. A valve-closure member, which can be actuated by the actuator and interacts with a valve seat to form a sealed seat, assumes the actual valve operation. The seal has a sealing member and a sealing element. The sealing element is joined to the sealing member by a first circumferential welded seam, is elastically deformable and band-shaped, and is joined to the valve housing by a second circumferential welded seam.

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