| 摘要 |
Provided is a fuel cell system capable of stabilizing the power generating state of a fuel cell after it was returned from an intermittent run to an ordinary run. The fuel cell system comprises a fuel cell, a fuel gas line having a fuel gas feeding passage for feeding the fuel gas fed from a fuel feed source, to the fuel cell, a variable pressure regulating valve for variably regulating the pressure of the gas to flow in the fuel gas feeding passage, and a purge valve for discharging the gas from the fuel gas line. The fuel cell system discharges the impurities in the fuel gas line to the outside through the purge valve after the fuel cell was transferred from a temporary stop state to a power generating state. Further comprised is control means for controlling the opening/closing actions of the variable pressure regulating valve, in case the impurity quantity in the fuel gas line in the temporary power generation stopping state increases over a predetermined quantity, so that the pressure of the fuel gas to be fed to the fuel cell after the transfer of the fuel cell from the temporary stop state to the power generating state may exceed a predetermined standard value. |
