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
2007-04-04
2011-11-15
Cantelmo, Gregg (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S456000
Reexamination Certificate
active
08057943
ABSTRACT:
A fuel cell operating system which can prevent freezing of a valve and a method of preventing fixation of the valve in the fuel cell operating system are provided. In steps of the process of preventing freezing of a valve in the present invention, first, supply of hydrogen, which is a fuel gas, is stopped. Power generation is continued in a fuel cell stack until the fuel gas which has already been supplied is consumed by the fuel cell reaction. It is constantly judged whether or not the power generation is stopped. When it is judged that the power generation is stopped, a function of a water discharge process module executes a process to open a bypass valve. When the bypass valve is opened, a large amount of pressurized air is supplied to a bypass flow path, and water present in the bypass flow path and water present in an exit-side flow path are forcibly pushed and discharged.
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Cantelmo Gregg
Kenyon & Kenyon LLP
Toyota Jidosha & Kabushiki Kaisha
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