Exhaust system for a motor vehicle

Abstract

An exhaust system ( 1 ) for a motor vehicle includes an exhaust gas-purifying device ( 2 ) for purifying exhaust gas ( 3 ) removed from an internal combustion engine with a reducing agent feed ( 4 ), which is arranged downstream and at a spaced location from the exhaust gas-purifying device ( 2 ) and by which a reducing agent can be introduced into the exhaust system ( 1 ). A reducing agent-deflecting device ( 7 ) is arranged between the exhaust gas-purifying device ( 2 ) and the reducing agent feed ( 4 ). The reducing agent-deflecting device ( 7 ) has at least one reducing agent-deflecting element ( 8 ) of a blade-like design.

What is claimed is: 
     
         1 . An exhaust system for a motor vehicle, the exhaust system comprising:
 an exhaust gas-purifying means for purifying exhaust gas removed from an internal combustion engine of the motor vehicle;   a reducing agent feed means for introducing reducing agent into the exhaust system, the reducing agent feed means being located at a spaced location downstream from the exhaust gas-purifying means; and   a reducing agent-deflecting device arranged between the exhaust gas-purifying means and the reducing agent feed means, the reducing agent-deflecting device having at least one reducing agent-deflecting element with a blade design.   
     
     
         2 . An exhaust system in accordance with  claim 1 , wherein a direction of flow, in which the reducing agent is introduced into the exhaust system, extends at least partly opposite a direction of flow of the exhaust gas in the exhaust system. 
     
     
         3 . An exhaust system in accordance with  claim 1 , wherein the reducing agent-deflecting element is designed such that reducing agent introduced by the reducing agent feed means into the exhaust system and reaching the reducing agent-deflecting element is deflected in a direction away from the exhaust gas-purifying means. 
     
     
         4 . An exhaust system in accordance with  claim 1 , wherein the reducing agent-deflecting element is designed such that reducing agent introduced by the reducing agent feed means into the exhaust system and reaching the reducing agent-deflecting element is evaporated. 
     
     
         5 . An exhaust system in accordance with  claim 1 , wherein the reducing agent-deflecting device is arranged and/or fastened on an outlet side of the exhaust gas-purifying means. 
     
     
         6 . An exhaust system in accordance with  claim 1 , wherein the reducing agent-deflecting device comprises a plurality of reducing agent-deflecting elements, which are arranged in an area of an outlet side of the exhaust gas-purifying means. 
     
     
         7 . An exhaust system in accordance with  claim 6 , wherein the reducing agent-deflecting elements are arranged and/or designed with a line of sight blocking, at or adjacent to the outlet side, in a direction of propagation of the reducing agent. 
     
     
         8 . An exhaust system in accordance with  claim 6 , further comprising at least one fastening element which has an essentially strut design, wherein:
 the outlet side defines an outlet cross-sectional area of the exhaust gas-purifying means;   the at least one fastening element is supported on an end side on the outlet side of the exhaust gas-purifying means;   the at least one fastening element is arranged in the area of an outlet cross-sectional area of the outlet side; and   at least one reducing agent-deflecting element is arranged at the at least one fastening element.   
     
     
         9 . An exhaust system in accordance with  claim 8 , wherein the reducing agent-deflecting element is formed integrally with the fastening element. 
     
     
         10 . An exhaust system in accordance with  claim 8 , wherein at least five fastening elements are arranged at mutually spaced locations from one another in an area of the outlet cross-sectional area. 
     
     
         11 . An exhaust system in accordance with  claim 8 , wherein:
 the at least one fastening element comprises plural fastening elements arranged in the form of a row in the outlet cross-section area; and   the reducing agent-deflecting elements are arranged each at spaced locations from one another on a respective fastening element whereby a grid of reducing agent-deflecting elements is formed by the reducing agent-deflecting elements.   
     
     
         12 . An exhaust system in accordance with  claim 8 , wherein the at least one fastening element comprises plural fastening elements, each designed as straight struts, which are arranged essentially in parallel and at mutually spaced locations from one another in the area of the outlet cross-sectional area of the exhaust gas-purifying means. 
     
     
         13 . An exhaust system in accordance with  claim 8 , wherein the at least one fastening element comprises plural fastening elements, each designed as a curved strut, which are arranged at mutually spaced locations from one another in the area of the outlet cross-sectional area of the exhaust gas-purifying means. 
     
     
         14 . An exhaust system in accordance with  claim 1 , wherein the at least one reducing agent-deflecting element comprises a plurality of reducing agent-deflecting elements, each having a curved or angular design in an axial direction and each being fastened with an axial end section to a respective fastening element. 
     
     
         15 . A motor vehicle comprising:
 an internal combustion engine; and   an exhaust system, the internal combustion engine being arranged upstream of the exhaust system and being fluidically connected with same, the exhaust system comprising:
 an exhaust gas-purifying means for purifying exhaust gas removed from an internal combustion engine of the motor vehicle; 
 a reducing agent feed means for introducing reducing agent into the exhaust system, the reducing agent feed means being located at a spaced location downstream from the exhaust gas-purifying means; and 
 a reducing agent-deflecting device arranged between the exhaust gas-purifying means and the reducing agent feed means, the reducing agent-deflecting device having at least one reducing agent-deflecting element with a blade design. 
   
     
     
         16 . A motor vehicle in accordance with  claim 15 , wherein:
 a direction of flow, in which the reducing agent is introduced into the exhaust system, extends at least partly opposite a direction of flow of the exhaust gas in the exhaust system; and   the reducing agent-deflecting element is designed such that reducing agent introduced by the reducing agent feed means into the exhaust system and reaching the reducing agent-deflecting element is deflected in a direction away from the exhaust gas-purifying means or evaporated.   
     
     
         17 . A motor vehicle in accordance with  claim 15 , wherein:
 the reducing agent-deflecting device comprises a plurality of reducing agent-deflecting elements connected to the gas-purifying means and arranged in an area of an outlet side of the exhaust gas-purifying means; and   the reducing agent-deflecting elements provide a line of sight blocking of the reducing agent with respect to a direction of propagation of the reducing agent.   
     
     
         18 . A motor vehicle in accordance with  claim 17 , further comprising at least one fastening element which has an essentially strut design, wherein:
 the outlet side defines an outlet cross-sectional area of the exhaust gas-purifying means;   the at least one fastening element is supported on an end side on the outlet side of the exhaust gas-purifying means;   the at least one fastening element is arranged in the area of an outlet cross-sectional area of the outlet side; and   at least one reducing agent-deflecting element is arranged at the at least one fastening element.   
     
     
         19 . A motor vehicle in accordance with  claim 18 , wherein:
 the reducing agent-deflecting element is formed integrally with the fastening element.   
     
     
         20 . An exhaust system for a motor vehicle, the exhaust system comprising:
 an exhaust gas-purifying device for purifying exhaust gas removed from an internal combustion engine of the motor vehicle;   a reducing agent feed introducing reducing agent into the exhaust system, the reducing agent feed being located at a spaced location downstream from the exhaust gas-purifying means; and   a reducing agent-deflecting element arranged between the exhaust gas-purifying device and the reducing agent feed, the reducing agent-deflecting element having a blade surface extending into a reducing agent flow.