Patent ID: 8092946

Claim:
A fuel cell system which comprises a fuel supply source and a fuel cell and which supplies a fuel gas from the fuel supply source via a fuel gas supply passage to the fuel cell to generate a power, the fuel cell system further comprising an output limit device that limits the output of the fuel cell after a shift from an intermittent operation mode of the fuel cell to a usual operation mode, wherein the output limit device subtracts the flow rate of the fuel gas used to recover the pressure of the fuel gas in the fuel gas supply passage in the intermittent operation mode to the pressure of the fuel gas in the usual operation mode from the total flow rate of the fuel gas supplied from the fuel supply source after the shift from the intermittent operation mode to the usual operation mode, to calculate the flow rate of the fuel gas actually supplied to the fuel cell after the shift from the intermittent operation mode to the usual operation mode, thereby limiting the output of the fuel cell by use of an output current value corresponding to the calculated flow rate as an upper limit.