Pressure regulation of a fuel cell hydrogen tank system
US7067212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Jan 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A delivery system for the delivery of a gaseous fuel such as for example hydrogen, to a consumer, in particular to a fuel cell stack, wherein the fuel comes from a source with a higher pressure level, the delivery system comprising at least one mechanical pressure regulating valve which has a valve member biased by means of a spring and which is designed to regulate the fuel from the higher pressure level down to a lower pressure level which serves as the feed pressure for a control valve, wherein the control valve is connectable via a feed line to a consumer and determines the mass flow of the fuel coming from the source which is supplied to the consumer and wherein changes of the pressure prevailing at the consumer side of the control valve arise with power changes of the consumer, is characterized in that the said pressure prevailing at the consumer side of the control valve, or a value proportional to the latter or corresponding to it, can be supplied via a control line to the mechanical pressure regulating valve to supplement the spring bias acting on the valve member of the mechanical pressure regulating valve. In addition, a fuel cell system and a method for delivering a gas…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.