| 摘要 |
Disclosed is a fuel cell system comprising a fuel cell stack, supplied with a reaction gas on the gas inlet side and comprises at least one flush valve on the gas outlet side on a flush cell. A control device, which controls the actuation of the flush valve as a function of the voltage of the flush cell, is provided, wherein the voltage tap is provided in a region of the flush cell at which the concentration of the reaction gas drops the fastest to a predefined threshold value. Due to the voltage tap in the region where the concentration of the reaction gases drop the fastest to a predefined threshold value, a significantly more sensitive and precise regulation of the flush is possible and voltage dips are effectively prevented in the flush cell, as a result of which the overall risk of corrosion are minimized for the flush cell.
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