Patent · US Expired

Electromagnetically operated fuel injection valve

US5285969A · kind A · utility

9Cited by

6References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Max Greiner · Gerlingen, DE
Peter Romann · Stuttgart, DE
Ferdinand Reiter · Markgröningen, DE
Rudolf Babitzka · Kirchberg, DE

Key dates

Filing date	Dec 14, 1992
Grant date	Feb 15, 1994
Priority date	—
Expiry date	Dec 14, 2012

Classification

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

Abstract

An electromagnetically operated fuel injection valve has a valve housing, a valve seat body having a valve seat and a guide cylinder, a valve closing element projecting in the guide cylinder and supporting a ball type valve closing body around which fuel can flow through spiral flutes in which the valve closing element releases or interrupts a fuel flow by sitting on or lifting off the valve seat. The valve seat body in addition to the guide cylinder and the valve seat, also contains at least one outlet orifice. The valve seat body is provided with an all-round spiral flute between the guide cylinder and the valve seat.

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