Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2005-03-15
2009-10-27
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S006000
Reexamination Certificate
active
07608354
ABSTRACT:
A gas/liquid separation device is connected to a discharge valve which can discharge fuel gas to the outside of a fuel cell system along with water accumulated in the gas/liquid separation device. A change in pressure at a portion upstream of the discharge valve, which occurs due to an opening operation of the discharge valve, is detected or estimated, and an integral value is obtained by integrating the amount of change in the pressure with respect to time from when the discharge valve is opened or a parameter value corresponding to the integral value is obtained. The integral value represents an amount of fuel gas discharged due to the opening operation of the discharge valve. It is therefore possible to reliably discharge a desired amount of fuel gas by deciding a closing time at which the discharge valve is closed based on the integral value or the parameter value.
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Hasegawa Masahiko
Jufuku Yasunobu
Miura Shimpei
Mizuno Minobu
Umayahara Kenji
Oliff & Berridg,e PLC
Parsons Thomas H.
Ryan Patrick
Toyota Jidosha & Kabushiki Kaisha
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