Patent · US Expired

Fuel injection valve for an internal combustion engine

US7044406B2 · kind B2 · utility

1Cited by

4References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Kuegler · Ditzingen, DE
Predrag Nunic · Stuttgart, DE
Detlev Potz · Stuttgart, DE

Key dates

Filing date	Mar 26, 2003
Grant date	May 16, 2006
Priority date	—
Expiry date	Mar 26, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/46
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Disclosed is a fuel injection valve for internal combustion engines having a valve body in which a hollow valve needle is disposed longitudinally displaceably in a bore. The hollow valve needle, on its end toward the combustion chamber, has a conical valve sealing face, which cooperates with a conical valve seat disposed on the end of the bore toward the combustion chamber. A longitudinal bore is embodied in the hollow valve needle, and a valve needle is disposed in it and, with a valve contact face embodied on its end toward the combustion chamber, likewise cooperates with the valve seat. The tip of the hollow valve needle toward the combustion chamber is formed by a chamfer.

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