Patent · US Expired

Fuel injector

US6983900B2 · kind B2 · utility

2Cited by

7References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Guenter Dantes · Eberdingen, DE
Detlef Nowak · Untergruppenbach, DE
Joerg Heyse · Markgröningen, DE

Key dates

Filing date	Oct 19, 2001
Grant date	Jan 10, 2006
Priority date	—
Expiry date	Sep 13, 2022

Classification

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

Abstract

A fuel injector for fuel injection systems of internal combustion engines includes a valve needle and a valve closing body, which is operationally linked to it and cooperates with a valve seat face situated in a valve seat body to form a sealing seat. Upstream from the sealing seat there is at least one swirl channel, which has a tangential component relative to the longitudinal axis of the fuel injector. An axial channel, which is formed between the valve closing body and the guide recess of the valve seat body, has an axial component relative to the longitudinal axis of the fuel injector, the axial channel being formed between the guide recess and at least one flattened area on the valve needle.

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