Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2005-11-29
2010-02-23
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S006000, C429S006000
Reexamination Certificate
active
07666532
ABSTRACT:
A reaction gas is supplied to a cathode side of a fuel cell at a flow rate higher than that for a usual operation of the fuel cell to thaw the fuel cell system at startup in a freezing state of the system when the system has experienced a temperature lower than an operation temperature of an anode off-gas. A thawing state of the system is detected on the basis of at least two of temperatures of the anode off-gas, a cathode off gas, and a radiator liquid of the fuel cell to control supplying the reaction gas to the cathode side at a usual operation flow rate. An actual increase rate of the temperature of the anode off-gas is obtained and an increase rate of the temperature of the anode off-gas is calculated from the self-heating value to be compared to determine the thawing state.
REFERENCES:
patent: 6896985 (2005-05-01), Horiguchi et al.
patent: 2004/0106026 (2004-06-01), Fujita et al.
patent: 2002-093445 (2002-03-01), None
Miyata Koichiro
Ogawa Jumpei
Ueda Kenichiro
Uoshima Minoru
Wake Chihiro
Honda Motor Co. Ltd.
Lahive & Cockfield LLP
Laurentano Anthony A.
Ryan Patrick
Siddiquee Muhammad
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