Method and apparatus for the evaluation of abnormal combustions of an internal combustion engine of a motor vehicle by means of a regression calculation of a physical size

摘要

The invention relates to a method for the evaluation of abnormal combustions of an internal combustion engine of a motor vehicle by means of a regression calculation of a physical reference variable, in which from a measured sensor signal (ks), a recognition size (peak‘_result) the abnormal combustion is calculated. In the case of a method by means of which abnormal combustion cycles of the internal combustion engine in all operating points are reliably detected and, can be classified, is used for the regression calculation of the recognition of size (peak‘_result) a stepwise system is used, with which, from the sensor signal (ks) at least one reference value (peak’_lin, ‘ δpeak, δpeak‘_lim) is calculated, which a measured reference value (peak) of the sensor signal (ks) corresponds to.