| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system which can be controlled so that an open state of a valve is maintained even if there are fluctuations in a primary pressure of a solenoid driven type on-off valve such as an injector.SOLUTION: The fuel cell system includes: a fuel cell stack that receives fuel gas supply and generates electric power; the solenoid driven type on-off valve in which fuel gas supply to the fuel cell stack is regulated by driving the valve on-off at a prescribed driving cycle by the electro-magnetic driving force; a control means to control on-off of the solenoid driven type on-off valve by PWM control, a primary pressure detecting means to detect pressure of the fuel gas in the upper stream side of the solenoid driven type on-off valve, and a calculating means that calculates the reference PWM duty ratio based on the voltage of the power supply means that supplies the electric power to the solenoid type on-off valve, a correction coefficient based on the pressure detected by the primary pressure detecting means, and a correction PWM duty ratio based on the reference PWM duty ratio and the correction coefficient. The control means controls on-off of the solenoid driven type on-off valve by the corrected PWM duty ratio. |
