Patent · US Expired

Valve needle for an electromagnetically actuated valve

US5820031A · kind A · utility

10Cited by

6References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ferdinand Reiter · Markgröningen, DE
Martin Maier · Asperg, DE
Manfred Dreyer · Kornwestheim, DE

Key dates

Filing date	Jul 1, 1996
Grant date	Oct 13, 1998
Priority date	—
Expiry date	Jul 1, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S239/90
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The valve needle includes a connecting part that is manufactured from a semifinished profiled section and joins an armature and a valve closure member. Together with the armature, the profiled connecting part forms flow channels. Since the fuel flowing through the flow channels arrives downstream from the flow channels, outside of the connecting part and up to the valve seat, there is no need for fuel outside the connecting part. The valve needle is especially suited for injectors in fuel-injection systems of mixture-compressing internal combustion engines with externally supplied ignition.

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