Preventing fuel starvation of a fuel cell stack

Details Preventing fuel starvation of a fuel cell stack Preventing fuel starvation of a fuel cell stack

2004-01-27

2010-10-05

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

C429S428000

Reexamination Certificate

active

07807302

ABSTRACT:
The direction of flow of purged fuel reactant gas (20) is sensed (38, 39, 44, 53, 54) to ensure it flows outwardly from a fuel cell stack (9) towards the ambient (21). If the purged fuel reactant. gas is not flowing outwardly, a signal (39) causes a controller (26) to open the circuit (35) thereby disconnecting the electrical load (33) from the fuel cell stack.

REFERENCES:
patent: 3444736 (1969-05-01), Stedman
patent: 6815101 (2004-11-01), de Vaal et al.
patent: 2002/0001741 (2002-01-01), Kawasumi et al.
patent: 2002/0055023 (2002-05-01), Rueegge et al.
patent: 2004/0126223 (2004-07-01), Maloney
patent: 2004/0137290 (2004-07-01), Woods et al.
patent: 2005/0136296 (2005-06-01), Skidmore et al.
patent: 2005/0161520 (2005-07-01), Gast

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