Internal combustion engine operating method for motor vehicle, involves obtaining measured value for lambda sensor e.g. control sensor, which determines regulation of control parameter used during basic regulation

摘要

The method involves subjecting an internal combustion engine (1) in regulation operation while changing sequence of phases with a pre-determined greased air-fuel ratio and lean air-fuel ratio, where the air-fuel ratio averaged over the sequence is regulated during basic regulation at a reference value. The engine is arranged downstream in a direction of flow of exhaust gas from a lambda sensor (5) e.g. guidance sensor. Measured value for another lambda sensor (6) e.g. control sensor, is obtained, to determine the regulation of a control parameter used during basic regulation. The control parameter is considered as amplification factor.