Patent · US Expired

Injection valve

US4907746A · kind A · utility

3Cited by

8References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karl Aichele · Stuttgart, DE
Wolfgang Kramer · Jena, DE
Ernst Lang · Gerlingen, DE
Mathias Linssen · Scheßlitz, DE
Alois Stemmer · Leinfelden, DE
Michael Wissmann · Markgröningen, DE

Key dates

Filing date	Apr 23, 1985
Grant date	Mar 13, 1990
Priority date	—
Expiry date	Apr 23, 2005

Classification

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

Abstract

An injection valve for fuel injection systems in internal combustion engines which comprises a movable valve element cooperating with a valve seat disposed in a nozzle body, with a guide bore provided downstream of the valve seat. A swirl insert is partially compressed in the guide bore and disposes open swirl channels in the direction of its circumference. The swirl channels extend in an axial direction from one end of the swirl insert to the other, are slanted toward the longitudinal shaft of the injection valve and discharge in a tangential direction into a preparation bore. The swirl channels serve simultaneously as metering channels whose throttling length is adjustable by displacing the swirl insert inside the guide bore.

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