Patent · US Expired

Fuel injector

US6824085B2 · kind B2 · utility

4Cited by

9References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Sebastian · Stuttgart, DE
Jens Pohlmann · Bietigheim-Bissingen, DE
Martin Maier · Asperg, DE
Guenter Dantes · Eberdingen, DE
Detlef Nowak · Untergruppenbach, DE
Joerg Heyse · Markgröningen, DE
Joerg Schlerfer · Bietigheim-Bissingen, DE

Key dates

Filing date	Nov 5, 2002
Grant date	Nov 30, 2004
Priority date	—
Expiry date	May 29, 2023

Classification

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

Abstract

A fuel injector, in particular for direct injection of fuel into the combustion chamber of an internal combustion engine, includes a valve-closure member which forms a sealing seat together with a valve-seat surface which is formed on a valve-seat member, and several injection orifices, each of which is connected with at least one spiral groove so that an outer edge of the swirl grooves coincides in part with a circumferential edge of the injection orifices. The swirl grooves extend generally perpendicular to a center line of the injection orifice associated with them.

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