Passive control of fuel concentration in a liquid feed fuel...

Details Passive control of fuel concentration in a liquid feed fuel... Passive control of fuel concentration in a liquid feed fuel...

2006-05-09

2006-05-09

Barr, Michael (Department: 1746)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S006000, C429S006000, C429S006000

Reexamination Certificate

active

07041404

ABSTRACT:
In a liquid feed fuel cell system, substantially pure fuel needs to be added to a dilute mixture of fuel in water so as to maintain the fuel concentration at an appropriate level for use with the fuel cell system. Under passive control of the fuel concentration, a first equilibrium concentration is established between the substantially pure fuel and a fuel transfer medium. A second equilibrium concentration is then established between the fuel transfer medium and the dilute mixture for use with the fuel cell system. The system is “passive” as it does not rely on the measurement of the fuel concentration and direct injection of fuel. The fuel transfer medium can be solid, liquid or gas.

REFERENCES:
patent: 6306285 (2001-10-01), Narayanan et al.
patent: 6630266 (2003-10-01), Hockaday et al.
patent: 2002/0076589 (2002-06-01), Bostaph et al.
patent: WO 01/35478 (2001-05-01), None
patent: WO 02/49125 (2002-06-01), None

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