Patent · US Expired

Dosing unit and method for dosing liquid or gaseous educts for a fuel cell system

US6874530B2 · kind B2 · utility

1Cited by

11References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Michael Nau · North Port, US
Nikolaus Benninger · Lambach, DE
Marc Bareis · Markgröningen, DE
Frank Ilgner · Stuttgart, DE
Horst Harndorf · Schwieberdingen, DE

Key dates

Filing date	Jan 17, 2001
Grant date	Apr 5, 2005
Priority date	—
Expiry date	Apr 28, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/8242
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A metering unit for metering liquid and/or gaseous educts by means of a feed pump for a fuel cell system, including at least one lead line for delivering an educt flow, at least one control piston, and a differential pressure valve for regulating the educt flow; the differential pressure valve has a regulatable throttling cross section, which is variable automatically, as a function of a flow pressure dictated by the control piston, in order to regulate the educt flow. The lead line leads to the control piston, and between the control piston and the differential pressure valve a first and a second connecting line are provided.

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