Fuel cell system and method of controlling gas pressure in...

Details Fuel cell system and method of controlling gas pressure in... Fuel cell system and method of controlling gas pressure in...

2011-06-28

2011-06-28

Ryan, Patrick Joseph (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

C429S427000, C429S428000, C429S446000

Reexamination Certificate

active

07968241

ABSTRACT:
A controllable range of an air flow rate and an air pressure in a fuel cell system is calculated from air flow rates and air pressures when the air back pressure valve is fully open and fully closed. A target generation current is calculated from an accelerator position or an auxiliary unit to calculate a target air flow rate and a target air pressure as target values. If the target values are outside the controllable range, it is judged whether the target values exceed an upper limit the controllable range, the target values are decreased onto the upper limit, and if no, the target values are increased onto the lower limit of the controllable range.

REFERENCES:
patent: 2004/0161643 (2004-08-01), Uehara et al.
patent: 2002-313388 (2002-10-01), None
patent: 2003-168467 (2003-06-01), None
Japanese Office Action for Application No. 2005-219220, dated Jan. 25, 2011.

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