Patent ID: 8642224

Claim:
A fuel cell system comprising: a fuel cell; a fuel supply source; a fuel supply system which supplies a fuel gas to be supplied from the fuel supply source to this fuel cell; a gas state variable supply device which is arranged in this fuel supply system and adjusts a gas state of the gas to be supplied to the fuel cell; and a control device for driving and controlling the gas state variable supply device in accordance with an operation state of the fuel cell, the control device configured to: establish a relation between a basic jet time of the gas state variable supply device and an output current of the fuel cell; set a plurality of learning zones each corresponding to a different level of the output current of the fuel cell; learn a driving characteristic of the gas state variable supply device for each of the plurality of learning zones in accordance with the state of the fuel gas to be supplied to the fuel cell by integrating a correction value for a predetermined number of integration times and by averaging the integrated correction value over the number of integration times, the learning is to obtain a learned value to compensate for changes of the driving characteristic; correct a driving parameter, which is set in accordance with the operation state of the fuel cell, of the gas state variable supply device based on a result of the learning; and control the gas state variable supply device based on the corrected driving parameter.