Patent · US Expired

Electromagnetically actuated valve

US6042082A · kind A · utility

6Cited by

3References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Jurgen Graner · Sersheim, DE
Andreas Eichendorf · Schorndorf, DE
Thomas Sebastian · Stuttgart, DE

Key dates

Filing date	May 6, 1999
Grant date	Mar 28, 2000
Priority date	—
Expiry date	May 6, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/08
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electromagnetically operated valve, in particular a fuel injection valve for fuel injection systems, has a core surrounded by a magnet coil and an armature adjacent to the core for operating a valve closing body that interacts with a valve seat body. A reflux body surrounding the armature is magnetically isolated from the core by an isolation point. The core and/or the reflux body is made of a ferritic or ferromagnetic material whose permeability depends on the mechanical stress in the material. The core and/or the reflux body is mechanically deformed in a boundary area between the core and the reflux body to form the magnetic isolation point.

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