Patent ID: 7134428

Claim:
A method for obtaining a correctively adjusted output signal from a measuring signal of a lambda probe located in an exhaust of an internal combustion engine, whereby said measuring signal is sampled in a time-slot pattern and averaged through totaling over a specified summation period, said period corresponding to the period of oscillation, dependent on engine speed, of pressure pulsations of the exhaust, wherein, the continuously-sampled individual values of the measuring signal are buffered in a memory area of a memory of a control device for the internal combustion engine, and the averaging includes a number N1, corresponding to the summation period, of individual values sampled in the time-slot pattern and is initiated by the control device at each instant at which an updated probe output signal is required, wherein totaling is carried out across the N1 individual values block-by-block and begins before an update time, so that the block values already formed continuously block-by-block up to the update time and buffered are used for calculating an average.