| 摘要 |
A fuel cell system is provided which efficiently performs a scavenging process for a fuel cell stack (10) constituted of a plurality of fuel cells (40) each of which generates electric power using reaction gas supplied. When the power generation of the fuel cell stack (10) is stopped or when the power generation of the fuel stack (10) is not being performed, a scavenging process is performed in which the reaction gas, as a scavenging gas, is circulated from the gas passage portions (44, 46) to the outlet manifold (62, 68). During the scavenging process, the area via which the scavenging gas is discharged from each gas passage portion (44, 46) to the outlet manifold (62, 68) is limited, and the area to be limited is sequentially switched from one to another. |
