Method for calibration, validation and adjustment of a lambda probe

摘要

The invention relates to a method for calibrating and validating a lambda probe with an ionization electrode in an air ratio-controlled combustion of a fuel-air mixture, exhaust gas signal values of the lambda probe serving for air ratio control and flame signal values for the ionization electrode for lambda probe validation. Furthermore, the invention relates to a method for adjusting a lambda probe and a method for the combustion-controlled combustion of a fuel-air mixture. The object of the invention is to create methods for calibrating, validating and adjusting a lambda probe which, without starting a stoichiometric reference operating point, lead to sufficiently reliable results with regard to validation and possibly adjustment of the lambda probe function. The method according to the invention for calibration and validation is characterized in that at least one calibration point and / or at least one signal value curve is calculated in advance from measured signal values, and that the lambda probe is validated on the basis of the at least one calibration point and / or the at least one signal value curve by performing a Deviation from a reference value is evaluated, and that if the validation is positive, the lambda probe is released for combustion controlled by the air ratio, and if the validation is negative, the lambda probe is readjusted.