METHOD OF FILTERING AND CORRECTING OSCILLATIONS OF A WEALTH SIGNAL FROM A PROBE OUTSIDE AN ENGINE

摘要

The invention relates to a method for filtering and correcting the signal of richness (Mes sond sam) measured by a probe during at least one operating condition of the motor creating oscillations of the measured wealth (Mes sond sam) and a modification of a model of the probe, the probe being called upstream probe. The operating condition is identified during preliminary tests on the engine relative to the adaptation of the preset setpoint (Consrich sond) to the engine with a storage of a value of a representative engine operating parameter that the condition is effective. As soon as said at least one value is detected at a given moment of the operation of the engine, a first nominal filtering is suspended and replaced by a second filtering of the measured wealth (My sam probes). It is then performed a correction of at least one parameter (ttrans, treps) of the probe.