Particle separator having a multi-part housing, method for producing the particle separator and motor vehicle having the particle separator

Abstract

A particle separator for treating exhaust gases from an internal combustion engine includes a housing having an inlet opening, an outlet opening, a central axis, a first part with a first joining surface and a second part with a second joining surface. The first and second joining surfaces correspond to one another, so that the first and second parts can be positioned along the central axis relative to one another. At least one metallic layer, through which exhaust gas can flow, spaces the first and second joining surfaces apart over the entire circumference. The particle separator can be manufactured cost-effectively in a simple manner with few measures and, in particular, is suitable for retrofitting to an existing exhaust system. A method for producing the particle separator and a motor vehicle having the particle separator are also provided.

1 . A particle separator for the treatment of exhaust gases of an internal combustion engine, the particle separator comprising:
 a housing having an inlet opening, an outlet opening, a central axis, a first part with a first joining surface and a second part with a second joining surface, said first and second joining surfaces corresponding to one another; and   at least one metallic layer through which exhaust gas can flow, said at least one metallic layer disposed in said housing and spacing said first and second joining surfaces apart from one another over a full circumference of said first and second joining surfaces.   
     
     
         2 . The particle separator according to  claim 1 , wherein said first and second joining surfaces do not lie in a flat plane. 
     
     
         3 . The particle separator according to  claim 1 , which further comprises an outer housing bracing said at least one metallic layer and said first and second parts with one another. 
     
     
         4 . The particle separator according to  claim 3 , wherein said housing and said outer housing define a spacing therebetween in a region of said corresponding first and second joining surfaces being positioned relative to one another. 
     
     
         5 . The particle separator according to  claim 1 , wherein said at least one metallic layer has a machined edge disposed at least partially outside said housing. 
     
     
         6 . The particle separator according to  claim 3 , wherein said at least one metallic layer at least partially makes contact with said outer housing. 
     
     
         7 . A method for producing a particle separator, the method comprising the following steps:
 providing a housing having a first part with a first joining surface and a first outer circumference and a second part with a second joining surface and a second outer circumference;   placing a metallic layer, through which exhaust gas can flow, between the first and second parts;   clamping the metallic layer by bringing the first and second parts together;   pushing an outer housing over the first outer circumference of the first part and the second outer circumference of the second part; and   joining the outer housing to the first and second parts outside a region of the first and second joining surfaces.   
     
     
         8 . The method according to  claim 7 , which further comprises producing the first and second parts from one piece by a cutting process. 
     
     
         9 . A method for producing a particle separator, the method comprising the following steps:
 dividing a housing into a first part with a non-rectilinearly running first joining surface and a second part with a second joining surface corresponding to the first joining surface;   placing at least one metallic layer, through which exhaust gas can flow, between the first second joining surfaces; and   fixing the first and second joining surfaces to one another with the at least one metallic layer held therebetween.   
     
     
         10 . A motor vehicle, comprising:
 an internal combustion engine;   an exhaust system for treatment of exhaust gases of said internal combustion engine, said exhaust system having at least one exhaust-gas line and an exhaust-gas recirculation line; and   a particle separator according to  claim 1  disposed in said exhaust-gas recirculation line.