METHOD FOR DESULFURIZING A NOX ADSORPTER CATALYST IN A DIESEL ENGINE AND DIESEL ENGINE DISCHARGE SYSTEM

摘要

desulphurization of a # ~ x ~ adsorber catalyst in a diesel engine discharge system. The present invention relates to desulphurizing a NOx adsorber catalyst (48) without significantly increasing the temperature of exhaust gases leaving the engine exhaust distributor (42) using a diesel oxidation catalyst (46). ) between the exhaust manifold (42) and the no-x ~ adsorber catalyst (48) to raise the exhaust gas temperature entering the no-x ~ adsorber catalyst (48) to a suitable desulphurization temperature by means of control of certain aspects of engine operation (24, 28, 52).