Patent · US Expired

Fuel injection valve

US7140562B2 · kind B2 · utility

29Cited by

7References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Volker Holzgrefe · Ditzingen, DE
Guenther Hohl · Stuttgart, DE
Michael Huebel · Gerlingen, DE
Juergen Stein · Mühlacker, DE

Key dates

Filing date	Aug 22, 2002
Grant date	Nov 28, 2006
Priority date	—
Expiry date	Aug 22, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/042
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injector for the direct injection of fuel into the combustion chamber of an internal combustion engine includes a valve needle situated in a nozzle body, the valve needle being actuable by an actuator and acted upon by a restoring spring in such a manner that a valve-closure member which is in operative connection to the valve needle and faces the combustion chamber is kept in sealing contact with a valve-seat surface in the non-actuated state of the actuator. A first jet-opening angle α1 is assigned to a first lift state of the valve needle and a second jet-opening angle α2 to a second lift state of the valve needle.

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