Patent · US Expired

Fuel injection valve

US6739525B2 · kind B2 · utility

22Cited by

9References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

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

Key dates

Filing date	Sep 30, 2002
Grant date	May 25, 2004
Priority date	—
Expiry date	Sep 30, 2022

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 a combustion chamber of an internal combustion engine, having an actuator for actuating a valve needle, the valve needle having on one injection end a valve-closure member which forms a sealing seat together with a valve-seat surface formed on a valve-seat member. Fuel channels are provided in a valve needle guide which is designed in one piece with or is connected to the valve-seat member and they open into a swirl chamber. The number of fuel channels is such that a turbulent flow produced in the swirl chamber is homogeneous in a circumferential direction.

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