Water purge fuel cell system and method
AssigneeNissan Motor Co., Ltd.
InventorFuminori Yamanashi
Life of this patent
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Abstract
In a fuel cell system for use in a vehicle and a method controlling the system, the system includes a fuel cell, a first flow control valve controlling the flow rate of oxygen containing gas to be supplied to the fuel cell, and a second flow control valve controlling the flow rate of hydrogen containing gas to be supplied to the fuel cell. A control unit supplies purge fluid into the fuel cell to remove water in response to a load condition of the vehicle.
Claims13
A fuel cell system applied for a moving object, comprising:
- a fuel cell;
- a first flow control valve controlling flow rate of oxygen containing gas to be supplied to the fuel cell;
- a second flow control valve controlling flow rate of hydrogen containing gas to be supplied to the fuel cell;
- and
- a control unit opening the first flow control valve and the second flow control valve to increase supply of the oxygen containing gas and the hydrogen containing gas into the fuel cell as purge fluid in response to a decelerating condition of a moving object, the purge fluid removing water from the fuel cell.
A fuel cell system applied for a moving object, comprising:
- a fuel cell;
- first flow controlling means for controlling flow rate of oxygen containing gas to be supplied to the fuel cell;
- second flow controlling means for controlling flow rate of hydrogen containing gas to be supplied to the fuel cell;
- and
- purging means for purging water from the fuel cell in response to a decelerating condition of a moving object while activating the first flow control means and the second flow control means to increase supply of the oxygen containing gas and the hydrogen containing gas into the fuel cell as purge fluid to remove water from the fuel cell.
A method of controlling a fuel cell system for a moving object powered by the fuel cell, the fuel cell system having a first flow control valve controlling flow rate of oxygen containing gas to be supplied to the fuel cell and a second flow control valve controlling flow rate of hydrogen containing gas to be supplied to the fuel cell, the method comprising:
- obtaining a decelerating condition of a moving object;
- and
- increasing supply of the oxygen containing gas and the hydrogen containing gas into the fuel cell as purge fluid to purge water from the fuel cell in response to the decelerating condition of the moving object.
Dependencies are inferred from the claim text.