VERFAHREN ZUM STARTEN DER REGENERATION EINES PARTIKELFILTERS

摘要

The invention concerns a method for launching a dysfunctional regeneration of a particle filter incorporated in an exhaust line of a controlled-ignition combustion engine of a motor vehicle, the method comprising a step of estimating a current load (Cs) of the filter and, when the current load (Cs) is greater than a minimum threshold, a step of modifying the combustion parameters (Mcs, RGa) in order to carry out a dysfunctional regeneration. The estimation step is based simultaneously on three estimates (10 to 12) of masses based on, respectively, a measurement of a pressure differential across the terminals of the filter, an estimate (12) of the emissions from the last regeneration, taking into account an estimate of natural combustion of the soot, and an estimate (11) of the emissions taken in isolation with a safety multiplication factor greater than 1, the second estimate (12) being recalculated at least with respect to the first estimate (10).