Patent ID: 6832473
Filing Date: 2004-12-21
Classification: B01D,C01B,F01N

Abstract:
A process for regenerating at least one of a NOx adsorber and a particulate filter disposed in an exhaust conduit, the process comprising;periodically supplying a fuel to a reformer; converting said fuel to a hydrogen and carbon monoxide containing fluid; periodically and selectively pulsing the hydrogen and carbon monoxide containing fluid into a selected one of an oxidation catalyst, a NOx adsorber, or a particulate filter; and generating an exotherm in the oxidation catalyst and heating an exhaust fluid passing therethrough to a temperature effective to regenerate a particulate filter disposed downstream from the oxidation catalyst, or regenerating the NOx adsorber by reacting the fluid containing the hydrogen and carbon monoxide with the nitrogen oxides trapped by the NOx adsorber, or generating an exotherm in the oxidation catalyst and heating an exhaust fluid passing therethrough to a temperature effective to desulfate the NOx adsorber, or a combination thereof.