Lambda regulation for use with internal combustion engine, involves determining control variable depending on output signal of rear oxygen sensor and conversion characteristic of catalytic converter

摘要

The method involves processing an output signal of a rear oxygen sensor (15) by a rear lambda control circuit, and determining a conversion characteristic of a catalytic converter (19). A rear lambda control circuit (9) processes the conversion characteristic in addition to the output signal of the oxygen sensor. A control variable is determined depending on the output signal of the rear oxygen sensor and the conversion characteristic. An independent claim is also included for a device for lambda regulation with an internal combustion engine.