METHOD OF CONTROLLING FUEL CELL VEHICLE AND FUEL CELL SYSTEM
First Claim
1. A method of controlling a fuel cell vehicle having a load energizable by electric power generated by a fuel cell from hydrogen supplied from a hydrogen storage device and an oxygen-containing gas supplied from an air pump, comprising the steps of:
- performing a rate limiting control process for reducing the electric power generated by the fuel cell to reduce a frequency at which a voltage generated by the fuel cell is equal to or higher than a predetermined voltage when electric power requested by the load is lowered, and changing a rotational speed of the air pump depending on the electric power requested by the load when the electric power generated by the fuel cell is reduced.
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Accused Products
Abstract
A fuel cell vehicle is controlled by performing a rate limiting control process for reducing electric power generated by a fuel cell to reduce a frequency at which a voltage generated by the fuel cell is equal to or higher than a predetermined voltage when electric power requested by a load is lowered, and changing a rotational speed of an air pump depending on the electric power requested by the load when the electric power generated by the fuel cell is reduced.
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Citations
12 Claims
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1. A method of controlling a fuel cell vehicle having a load energizable by electric power generated by a fuel cell from hydrogen supplied from a hydrogen storage device and an oxygen-containing gas supplied from an air pump, comprising the steps of:
performing a rate limiting control process for reducing the electric power generated by the fuel cell to reduce a frequency at which a voltage generated by the fuel cell is equal to or higher than a predetermined voltage when electric power requested by the load is lowered, and changing a rotational speed of the air pump depending on the electric power requested by the load when the electric power generated by the fuel cell is reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of controlling a fuel cell system having a load energizable by electric power generated by a fuel cell from hydrogen supplied from a hydrogen storage device and an oxygen-containing gas supplied from an air pump, comprising the steps of:
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performing a voltage increase limiting control process to limit an increase in a voltage generated by the fuel cell when electric power requested by the load is lowered; and controlling an output of the air pump in relation to requested electric power to be generated by the fuel cell before the increase in the voltage generated by the fuel cell is limited, in the voltage increase limiting control process.
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Specification