Exhaust gas purification device for catalytic reduction of exhaust gases in exhaust line of e.g. diesel engine of vehicle, has introduction device that is oriented to apply reducing agent only on primary flow surface of mixing element

摘要

#CMT# #/CMT# The exhaust gas purification device (1) has an introduction device (4) for introducing reducing agent into an exhaust line (3). A mixing element (8) for mixing reducing agent with exhaust gases, is arranged downstream of introduction device in exhaust gas line. A main flow surface (18) of mixing element is divided into primary flow surface (19) and a secondary flow surface (20) such that primary flow surface surrounds secondary flow surface in circumferential direction. The introduction device is oriented to apply reducing agent only on primary flow surface of mixing element. #CMT#USE : #/CMT# Exhaust gas purification device for catalytic reduction of exhaust gases in exhaust line of internal combustion engine e.g. diesel engine of vehicle e.g. motor vehicle. #CMT#ADVANTAGE : #/CMT# Since introduction device is oriented to apply reducing agent only on primary flow surface of mixing element, the good mix of the exhaust gases with reducing agent is enabled, and high rate of catalytic reduction is attained. Hence efficient cleaning of exhaust gases is attained. The bearing for mixing element is not necessary, so that production cost is reduced while improving service life. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawings show the schematic and perspective views of the exhaust gas purification device and mixing element. 1 : Exhaust gas purification device 3 : Exhaust line 4 : Introduction device 8 : Mixing element 18 : Main flow surface 19 : Primary flow surface 20 : Secondary flow surface.