METHOD AND DEVICE FOR CONTROLLING COMBUSTION AIR QUANTITY OF FUEL CELL FUEL OFF GAS

Japanese Patent JP3212181

B2

PURPOSE: To provide a method for controlling the combustion air quantity of a fuel off gas for controlling the combustion air quantity allowing the stable combustion of the fuel cell off gas even when the composition of a raw fuel supplied to a fuel reformer, the flow rate ratio to a load current, and the reforming condition of the fuel reformer are changed.
CONSTITUTION: The difference between the air quantity including the oxygen quantity necessary for combusting the raw fuel flow rate detected by a raw fuel flow rate detector 12, considering the time delay T until it reaches a fuel cell 1 through a fuel reformer 5 in a control device 30, and the air quantity including the oxygen quantity consumed in the battery reaction necessary for the load current detected by a current detector 25 corresponds to the combustion air quantity necessary for combusting a fuel off gas by a burner 8. Thus, the total air quantity obtained by multiplying the combustion air quantity by an air-fuel ratio is inputted as a target value to a combustion air quantity controller 32, and the combustion air quantity is controlled by the rotating speed control of a blower 18.

Genichi Ikeda
Nobuhiro Iwasa
Tatsuya Ichihashi
Tadashi Komatsu

JP11747493A

September 25, 2001

May 20, 1993

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Tokyo Gas Co., Ltd.
OSAKA GAS CO.,LTD.
Toho Gas Co., Ltd.
Fuji Electric Co., Ltd.

H01M8/06; (IPC1-7): H01M8/06

JP61101969A
JP60212971A
JP6438968A
JP1307175A
JP320973A

Masaharu Shinobe

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