A method for detecting a periodically pulsating operating parameter

摘要

In the case of a process for the detection of a periodically pulsating operating parameter of an internal combustion engine (10) comprising the steps of: detecting a measured variable of the periodically pulsating operating parameter of the internal combustion engine (10), in order to produce a periodically pulsating measurement signal, discretization of the measuring signal in the time domain with a fixed time increment, in which by means of a period of the measurement signal in each case a number of discrete measured values corresponding to the number of increments of time of the period are obtained, the measured values, in each case as a representative of the measuring signal to be regarded in the respective time increment, and form a mean over the period of the measuring signal, in that a mean value of the discrete measured values is calculated, a better averaging for acquired pulsating operating parameters of an internal combustion engine, in that at least one of the discrete measured values of an approximation of the course of the measurement signal by way of the associated time increment (61) is carried out with a polynomial, in order to obtain the discrete measured value.