METHOD AND APPARATUS FOR OPERATING A LINEAR LAMBDA PROBE

摘要

The method involves determining a measurement signal (MS) of a linear lambda probe (3) based on an air-fuel ratio of gas flowing in an exhaust gas duct (1) of an internal combustion engine. A difference signal (DS) is generated based on a difference between a pump voltage signal (U P) and a Nernst voltage signal (U N). An offset error of the measurement signal is determined from the difference signal based on a stoichiometric ratio, and a target value (LAM SP) of the air-fuel ratio is determined based on a raw reference signal (LAM SP RAW) and a forced excitation signal (ZWA).