Mixing section for an exhaust system of an internal combustion engine

A mixing section for an exhaust system of an internal combustion engine, the mixing section comprising:

• a mixing section housing wherethrough exhaust gas can flow in a main exhaust-gas flow direction;
• a tubular mixing body defining a mixing body longitudinal axis and being arranged in the mixing section housing and extending in the direction of said mixing body longitudinal axis;
• said tubular mixing body radially outwardly delimiting a first flow volume through flowable by the exhaust gas;
• said tubular mixing body radially inwardly delimiting a second flow volume through flowable by the exhaust gas;
• said tubular mixing body including a tubular first mixing body part and at least one tubular second mixing body part;
• said tubular first mixing body part extending in the direction of said mixing body longitudinal axis;
• said at least one tubular second mixing body part extending in the direction of the mixing body longitudinal axis and being at an outer side of said tubular first mixing body part with said outer side toward said second flow volume;
• said at least one tubular second mixing body part being supported radially on said tubular first mixing body part at a plurality of mixing-body-part support regions;
• said tubular mixing body being supported radially with respect to said mixing section housing via a plurality of first radial support members in a first radial support region, and being supported radially with respect to the mixing section housing via a plurality of second radial support members in a second radial support region arranged at a distance from said first radial support region in the direction of said mixing body longitudinal axis;
• said tubular first mixing body part being supported radially on said mixing section housing by said first radial support members;
• and,
• said tubular second mixing body part being supported radially on said mixing section housing by said second radial support members.

An exhaust system for an internal combustion engine, the exhaust system comprising:

• a mixing section including:
• a mixing section housing wherethrough exhaust gas can flow in a main exhaust-gas flow direction;
• a tubular mixing body defining a mixing body longitudinal axis and being arranged in the mixing section housing and extending in the direction of said mixing body longitudinal axis;
• said tubular mixing body radially outwardly delimiting a first flow volume through flowable by the exhaust gas;
• said tubular mixing body radially inwardly delimiting a second flow volume through flowable by the exhaust gas;
• said tubular mixing body including a tubular first mixing body part and at least one tubular second mixing body part;
• said tubular first mixing body part extending in the direction of said mixing body longitudinal axis;
• said at least one tubular second mixing body part extending in the direction of the mixing body longitudinal axis and being at an outer side of said tubular first mixing body part with said outer side toward said second flow volume;
• said at least one tubular second mixing body part being supported radially on said tubular first mixing body part at a plurality of mixing-body-part support regions;
• said tubular mixing body being supported radially with respect to said mixing section housing via a plurality of first radial support members in a first radial support region, and being supported radially with respect to the mixing section housing via a plurality of second radial support members in a second radial support region arranged at a distance from said first radial support region in the direction of said mixing body longitudinal axis;
• said tubular first mixing body part being supported radially on said mixing section housing by said first radial support members;
• said tubular second mixing body part being supported radially on said mixing section housing by said second radial support members;
• and,
• an exhaust gas treatment unit arranged downstream of said mixing section.