Patent · US Expired

Fuel injection valve

US6427666B1 · kind B1 · utility

1Cited by

6References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Frank Dallmann · Kornwestheim, DE
Norbert Keim · Besigheim, DE
Dieter Etzel · Lambach, DE

Key dates

Filing date	Nov 30, 2000
Grant date	Aug 6, 2002
Priority date	—
Expiry date	Nov 30, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injector that has a valve needle that can be moved axially within a swirl insert and which has, among other things, a valve closing section that works in conjunction with a valve seat. The swirl insert, which has an inner longitudinal opening for the valve needle, has a swirl area having on its downstream end an arrangement for imparting a swirl. The arrangement for imparting swirl are designed in the form of swirl grooves which extend from the conical outer edge to the longitudinal opening and which open out to the lower end face of the swirl insert. The fuel injector is particularly suitable for use in fuel injection systems of internal combustion engines having fuel-air mixture compression and spark ignition

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