Patent · US Expired

3/2 Directional-control valve

US6964266B2 · kind B2 · utility

0Cited by

11References

18Claims

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	Jan 22, 2002
Grant date	Nov 15, 2005
Priority date	—
Expiry date	May 10, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M63/0045
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a 3/2-port directional-control valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, with a first switched position in which an injection nozzle is connected to a fuel return and with a second switched position in which the injection nozzle is connected to a high-pressure fuel reservoir. The beginning of the injection takes place in a pressure-controlled manner, whereas the end of the injection takes place in a stroke-controlled manner.

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