Patent ID: 7743607
Filing Date: 2010-06-29
Classification: B01D,F01N,F02B,F02D,Y02A,Y02T

Abstract:
1. System for assisting the regeneration of depollution means associated with means forming oxidation catalyst implementing an OSC function, constituting an oxygen reserve and integrated in an exhaust line of a motor vehicle diesel engine, in which the engine is associated with these common rail means for the supply of fuel to the cylinders thereof, wherein said system comprises: means for determining the frequency of attempts at regeneration and activations of requests for regeneration of the depollution means and for comparing this frequency to predetermined threshold values, wherein the engine is driven in (i) a first regeneration operation mode with lean mixture for the frequencies lower than the threshold values and in (ii) a second regeneration operation mode implementing sequences of operation of the engine alternating operation phases with rich mixture and with lean mixture for the frequencies higher than the threshold values.