Method for detecting a voltage offset at least in a region of a voltage - lambda - characteristic curve

摘要

It is a method for detecting a voltage offset at least in a region of a voltage - lambda - characteristic curve (18) in an exhaust gas duct of an internal combustion engine of a two-point - lambda probe arranged relative to a reference voltage lambda - - - characteristic curve (12) of the two-point - lambda probe is proposed, wherein information about the current operating conditions of the internal combustion engine and information about with a predetermined probability to be expected operating conditions be obtained, in which case the expected operating conditions for a period of time are obtained, which corresponds to at least a duration of the recognition, and the change in the composition of the air supplied to the internal combustion engine - / fuel mixture takes place only if the information about the current operating conditions correspond to a setpoint and the information about the expected operating conditions with a predetermined threshold value of the probability correspond to the desired value.