Patent · US Expired

3/2-way valve

US6874476B2 · kind B2 · utility

1Cited by

6References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Achim Brenk · Remchingen, DE
Wolfgang Klenk · Besigheim, DE
Uwe Gordon · Markgröningen, DE
Manfred Mack · Riedlingen, DE

Key dates

Filing date	Mar 15, 2002
Grant date	Apr 5, 2005
Priority date	—
Expiry date	Apr 27, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/21
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a 3/2-way valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, having a first switching position, in which an injection nozzle is in communication with a fuel return, and a second switching position, in which the injection nozzle is in communication with a common rail. To improve the function and quality of the injection, the 3/2-way valve includes two force-balanced control pistons, which are guided separately from one another, and on each of which a respective valve seat edge is embodied.

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