Patent ID: 6808686
Filing Date: 2004-10-26
Classification: B01D,F01N,F02B,F02D,Y02T

Abstract:
An internal combustion engine arrangement comprising:a spark-ignited internal combustion engine having a controllable air/fuel ratio; an exhaust line receiving exhaust gas from the internal combustion engine; an oxide gas absorber in the exhaust line including a support member wherein the support member is a metal support member having a surface and having electrical contacts to receive an electric current for heating the metal support member; and an absorption member arranged on the surface of the support member having a total surface area which is larger than that of the underlying area of the support member accessible to exhaust gas flowing through the exhaust line for reversible absorption of at least one nitrogen oxide (NOX) and at least one oxide of sulfur (SOX); and, a control unit for controlling regeneration of said oxide gas absorber, said control unit being arranged to periodically change said controllable air/fuel ratio of said engine to a rich mixture to regenerate said absorber and said control unit being arranged to control the temperature of the absorption member by at least one of adjusting composition parameters of the exhaust gas and by application of an electric current to heat said support member.