Patent ID: 8302391

Claim:
An exhaust system for an internal combustion engine of a motor vehicle, the exhaust system comprising: an exhaust gas line removing exhaust gas from said internal combustion engine; an injection means arranged in said exhaust gas line for injecting a liquid educt into said exhaust gas line; at least one of a mixing and evaporating device comprising a tubular body with one axial end having a plurality of radially inwardly pointing blades, said blades being arranged adjacent to one another in a circumferential direction, said blades having an angle of incidence in relation to an axial direction, said tubular body being formed integrally with said blades from a shaped single sheet metal body, said at least one of a mixing and evaporating device being arranged in said exhaust gas line downstream of said injection means with exhaust gas flowing through said tubular body, wherein: said blades overlap in the circumferential direction such that a coaxially arranged surface is formed, said coaxially arranged surface blocking a straight axial path in the axial direction; said blades are designed and arranged such that one of: said surface formed by the overlapping of said blade is a circular surface with a central core area with a resistance to flow that is lower than a resistance to flow of a surrounding annular surface area and said surface formed by the overlapping of said blades is a surrounding annular surface area and encloses a central core area that is free of blade surface so as to not block a straight axial path; and said injection means and said mixing and evaporating device are coordinated with one another such that said injection means generates an educt jet, which meets said blades within said coaxially arranged surface radially outside the central core area.