| 摘要 |
A fuel cell system includes a fuel cell, a reformer, a fuel supply portion, an oxygen supply portion, a power output portion, a reformed gas supply portion, a determination portion, and a controller. The fuel cell generates electric power through a reaction of hydrogen and oxygen. The reformer generates reformed gas, including hydrogen, from an emission gas of the fuel cell and hydrocarbon fuel through a steam reforming reaction and a partial oxidation reaction. The emission gas of the fuel cell includes steam and the reformer provides the reformed gas to the fuel cell. The fuel supply portion provides the hydrocarbon fuel to the reformer. The oxygen supply portion provides oxygen-including gas to the reformer. The power output portion is activated by at least part of at least one of the reformed gas and the hydrocarbon fuel. The reformed gas supply portion provides the reformed gas to the power output portion. The determination portion determines whether an amount of steam required for the steam reforming reaction is included in the emission gas. The controller controls the oxygen supply portion and the fuel supply portion so that a rate of oxygen provided to the reformer increases as compared to a case where the reformed gas is not provided to the power output portion, if the determination portion determines that the amount of steam required for the steam reforming reaction is not included in the emission gas. |
