| 摘要 |
A process and device for determination of the lambda value (lambda<SUB>actual</SUB>) of reformate ( 10 ) which is to be supplied to a fuel cell stack ( 12 ), by determining the lambda value (lambda<SUB>actual</SUB>) of the no-load voltage (U<SUB>0</SUB>) of the voltage on at least one fuel cell element ( 14 ). Furthermore, a process and device for lambda control of a reformer, utilizes the process and device for determining the lambda value to controller an actuator of a lambda-controlled reformer ( 16 ) for reaction of at least fuel ( 20 ) and air ( 22 ) into reformate ( 10 ), the reformer being connected to a fuel cell stack ( 12 ) to supply reformate ( 10 ) form the reformer ( 16 ) to the fuel stack ( 12 ).
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