PROCEDURE FOR HEATING HOLLIN FILTER IN EXHAUST GAS SYSTEM OF AN INTERNAL COMBUSTION ENGINE - IN PARTICULAR A DIESEL ENGINE - WITH AT LEAST A CATALYST AND A HOLLIN FILTER AVAILABLE WATER DOWN THESE IN THE OUTPUT ADDRESS, AT THE END OF THE OUTLET THE HOLLIN.

摘要

Method of heating a soot filter in an exhaust system of an internal combustion engine, in particular, a diesel engine, comprising - a plurality of catalysts arranged one behind the other in the direction of exit of the gases from exhaust, and - a soot filter disposed downstream of these in the exit direction in order to store the soot, the catalyst disposed directly upstream of the soot filter being heated to a degree that causes the amount of heat introduced from this The catalyst in the soot filter has the effect of heating the soot filter to a degree that causes soot combustion to occur, characterized in that the catalyst (6), arranged directly upstream of the soot filter (12) in the exit direction, is heated by the fact that each exothermic reaction moves, from another catalyst (3) arranged upstream in the exit direction, to the catalyst (6) disposed downstream, knowing that the displacement of the exothermic reaction is effected by a regulation of the ë index with an alternation of cycles of operation in rich / poor combustion engine (1), regulation for which the operation in a rich regime with ë 1, more and more time is conserved than the duration for which the oxygen (O2) stored in the oxygen accumulator of the catalyst (3) arranged upstream, can convert harmful substances that are hydrocarbon (HC ) and carbon monoxide (CO), so that the conversion is done, at least partially, due to the oxygen (O2) stored in the oxygen accumulator of the catalyst (6) arranged downstream.