Patent ID: 6625978
Filing Date: 2003-09-30
Classification: F01N,F02B,F02M

Abstract:
A device for purifying exhaust gases from a combustion engine (1), comprising an arrangement (30) for recirculating exhaust gases from the engine to an air intake (2) thereof, an exhaust gas purification arrangement (31) adapted to convert constituents in the exhaust gases to less environmentally hazardous substances and a filter arrangement (32) adapted to liberate the exhaust gases from particulate constituents, the filter arrangement (32) comprising at least one filter (33) arranged to receive from at least one converter unit (34) of the exhaust gas purification arrangement (31) a heat addition to promote regeneration of the filter by combustion of particulate constituents deposited therein, the filter (33) and the converter unit (34) being arranged in at least partly overlapping heat transferring relation as viewed transversely to the direction of exhaust gas flow, characterized in that the filter (33) is arranged in a first flow path (37) adapted to recirculate exhaust gases to the air intake (2) of the engine, and the converter unit (34) is arranged in a second flow path (39), in which exhaust gases flow from the engine (1) to an exhaust gas outlet (9) communicating with the surroundings.