Reducing agent i.e. nitrogen oxide, mixing and evaporating device for e.g. diesel operated internal-combustion engine, of motor vehicle, has lattice-like exhaust gas-permeable and reducing agent-subjectable structure arranged in channel

摘要

#CMT# #/CMT# The device (100) has a lattice-like exhaust gas-permeable and reducing agent-subjectable structure (114) arranged in an exhaust gas channel (102) comprising a set of guide elements (116, 118). Asymmetry of the structure is achieved by different incidence angles, different sizes and different shapes of the guide elements, where the guide elements are adjustable and/or deformable. The asymmetrical structure of the structure is oriented at a reducing agent supply device (108). #CMT# : #/CMT# An independent claim is also included for a device for impacting of an exhaust gas stream with a reducing agent. #CMT#USE : #/CMT# Device for mixing a reducing agent i.e. nitrogen oxide, with an exhaust gas and/or for evaporating the reducing agent in exhaust gas stream of an internal-combustion engine e.g. hydrocarbon-operated internal-combustion engine such as diesel operated internal-combustion engine or gasoline-operated internal-combustion engine, of a motor vehicle. Can also be used for gas-operated internal-combustion engines e.g. hydrogen-operated internal-combustion engine. #CMT#ADVANTAGE : #/CMT# The lattice-like exhaust gas-permeable and reducing agent-subjectable structure is arranged in the exhaust gas channel comprising the set of guide elements, such that the partial jets of urea water solution hit under different angles and spraying of partial jets of the urea water solution is effectively avoided, so that an even distribution of the urea water solution is ensured to the structure of the exhaust gas channel without formation of wall films at the inner wall of the exhaust gas channel downstream to the structure, thus ensuring a complete conversion of the nitrogen oxides when ammonia slack is avoided. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a device for impacting an exhaust gas stream with a reducing agent and reducing agent supply device arranged asymmetrically to the exhaust gas channel and an asymmetrically designed mixer/evaporator. 100 : Reducing agent evaporating and mixing device 102 : Exhaust gas channel 108 : Reducing agent supply device 114 : Lattice-like exhaust gas-permeable and reducing agent-subjectable structure 116, 118 : Guide elements.