| 摘要 |
The invention relates to a method for optimizing the fuel feed of a fuel cell stack catalytic electrode, the fuel cell stack containing a cell comprising a proton exchange membrane located between said catalytic electrode and another electrode, and operating in a superstoichiometric mode, said fuel comprising at least one carbonyl-containing polluting agent compound, said compound reacting on said catalytic electrode, characterized in that it comprises the following steps: - defining a reference voltage (U0) for said cell when fed with a fuel exempt from polluting agent; - defining a threshold voltage (Us) corresponding to a preset operating voltage of said cell equal to a percentage of said reference voltage; - defining a calibration curve for given operating conditions, relating said threshold voltage (Us) to a flow rate of polluting agent (Q co) and allowing a first parameter corresponding to the flow rate of polluting agent to be defined; - detecting the amount of polluting agent in order to define a second parameter corresponding to the content of polluting agent present in said fuel; and - determining a maximum stoichiometry coefficient for said fuel stream, depending on said two parameters, under given operating conditions |
