Patent · US Active

Anode loop observer for fuel cell systems

US8323841B2 · kind B2 · utility

2Cited by

2References

8Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Bernhard Baaser · Trebur, DE
Volker Formanski · Wiesbaden, DE

Key dates

Filing date	May 6, 2008
Grant date	Dec 4, 2012
Priority date	—
Expiry date	Jun 22, 2031

Classification

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

Abstract

A system and method for controlling the bleed valve in an anode recirculation loop of a fuel cell system. The system uses a model to determine the concentration of hydrogen in the recirculated gas by calculating the volume flow of the recirculated gas through a fuel cell stack, a pressure drop across the anode inlet and outlet of the stack, and the density of the recirculated gas, and using a measured temperature of the recirculated gas and a measured pressure drop across a recirculation pump.

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