Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation
Reexamination Certificate
2011-07-19
2011-07-19
Gilliam, Barbara L (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S443000, C429S408000
Reexamination Certificate
active
07981559
ABSTRACT:
A fuel cell system that generates electricity using an electrochemical reaction of fuel gas and oxidizing gas, having: a pressure adjustment valve which is provided on a fuel gas supply path for conducting the fuel gas from a fuel gas supply source to a fuel cell and which adjusts the supply gas pressure of the fuel gas; a degree of opening adjustment valve provided downstream of the pressure adjustment valve on the fuel gas supply path, the degree of opening thereof being set in stages or continuously in accordance with a degree of opening signal; and control means that adjusts the degree of opening adjustment signal in accordance with the operating condition of the fuel cell system and controls the state quantity of fuel gas supplied to the fuel cell to a target quantity. In this way, the pressure of fuel gas (for example, hydrogen gas) whose pressure has been reduced by the pressure adjustment valve can be further adjusted to the target pressure by the degree of opening adjustment valve provided downstream of the pressure adjustment valve in accordance with the operating condition of the fuel cell system.
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Best Zachary
Gilliam Barbara L
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
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