Patent · US Active

Non-flammable exhaust enabler for hydrogen powered fuel cells

US7651806B2 · kind B2 · utility

2Cited by

5References

4Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Daryl Chapman · Victor, US
Prem Menon · Rochester, US
David A. Masten · Tehachapi, US
Norm Dill · Walworth, US
Robert Schafer · Darmstadt, DE
Daniel B. O'Connell · Rochester, US
Barbara S. Moore · Victor, US

Key dates

Filing date	Mar 26, 2004
Grant date	Jan 26, 2010
Priority date	—
Expiry date	Dec 13, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A fuel cell system that employs a purge valve, an accumulator and a bleed valve for selectively purging and bleeding anode exhaust gas. When the purge valve is opened, the anode exhaust gas purges to the accumulator where it is collected. The bleed valve provides a controlled release of the anode exhaust gas from the accumulator that allows the concentration of hydrogen bled from the accumulator to remain below its combustible limit. In one embodiment, the purged anode exhaust gas is combined with the cathode exhaust gas and released to atmosphere. In another embodiment, the purged anode exhaust gas is combined with a cathode input gas. In another embodiment, the purged anode exhaust gas is combined with an anode input gas.

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