| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system which can improve the efficiency of power generation without causing carbon deposition. <P>SOLUTION: A new fuel flow rate introduced into a fuel reformer 15a is determined according to a request for fuel cell output, and further a discharged fuel circulation rate Ry or a ratio of branching by a first branch valve 25, a discharged fuel circulation rate Rd or a ratio of branching by a second branch valve 26, and O2/C are set on the basis of the determined fuel flow rate so as to heighten the operating efficiency of a fuel cell 11. Meanwhile, control means controls the first branch valve 25 and the second branch valve 26 so that each of the branching ratios will be achieved. Furthermore, the amount of air supplied to the fuel reformer 15a is controlled so that the O2/C will be achieved. As a result, it is possible to run a fuel cell system with high efficiency without causing carbon deposition and without causing insufficiency of the amount of heat required for reforming. <P>COPYRIGHT: (C)2013,JPO&INPIT |
