| 摘要 |
PURPOSE:To appropriately control fuel supply rate independent of load variation by installing a hydrogen concentration detecting sensor on the outlet side of a fuel gas passage in a fuel cell, and controlling the supply rate of reforming raw material to a reformer based on the output of the hydrogen concentration detecting sensor. CONSTITUTION:A hydrogen concentration detecting sensor 12 is installed in a manifold 16 on the outlet side of a fuel gas passage in the fuel cell 1. The sensor 12 outputs voltage proportional to the hydrogen concentration passing through the manifold 1b. The output signal of the sensor 12 is inputted to a controller 13, and the control signal from the controller 13 feedback controls the number of revolution of a raw material pump, or the reforming raw material supply rate to the reformer 2, so that hydrogen concentration in fuel is retained in a setting value which is previously specified by the controller 13. The optimum amount of fuel is constantly supplied to the cell 1 independent of load variation and without fear of fuel gas shortage. |
