Patent · US Expired

Electromagnetically actuatable valve

US4705210A · kind A · utility

7Cited by

2References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Franz Graser · Bamberg, DE
Werner Langer · Ludwigsburg, DE
Reiner Nowak · Bamberg, DE

Key dates

Filing date	Feb 4, 1987
Grant date	Nov 10, 1987
Priority date	—
Expiry date	Feb 4, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S239/90
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electromagnetically actuatable valve is proposed, which serves as a fuel injection valve for fuel injection systems in internal combustion engines. The valve includes a valve housing of ferromagnetic material, at least one magnetic coil mounted on a core of ferromagnetic material, and an armature arranged to actuate a valve closing element which cooperates with a valve seat. The armature protrudes beyond a ferromagnetic annular disk supported on a support shoulder of the valve housing and a stop disk of hard, nonmagnetic material is arranged in the annular groove of the annular disk such that when the armature is resting on the stop disk, a remnant air gap is formed in the axial direction between the annular disk and the armature.

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