Patent · US Expired

Electromagnetically actuatable fuel injection valve

US4779838A · kind A · utility

8Cited by

3References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Max Greiner · Gerlingen, DE
Udo Hafner · Munich, DE
Waldemar Hans · Bamberg, DE
Heinrich Knapp · Leonberg, DE
Wolfgang Kramer · Jena, DE
Rudolf Krauss · Stuttgart, DE
Ferdinand Reiter · Markgröningen, DE
Peter Romann · Stuttgart, DE
Rudolf Sauer · Memmingen, DE

Key dates

Filing date	Oct 30, 1987
Grant date	Oct 25, 1988
Priority date	—
Expiry date	Oct 30, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH01F2007/1692
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electromagnetically actuatable fuel injection valve which serves to supply fuel to a mixture-compressing internal combustion engine having externally supplied ignition. The fuel injection valve includes a valve housing with a mouth piece, in which a valve seat body is disposed, included are two magnet coils, two cores and one armature of soft magnetic material, which with an extension is inserted into a receiving bore of a spherical guide section made from hard material and is connected to a valve needle. The spherical guide section is slidably supported with its circumference in a guide bore of the valve seat body and in its stroke movement away from the core is limited by a stop opening adjoining the guide bore.

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