Patent ID: 8801267

Claim:
A static mixer for an exhaust gas system of an internal combustion engine which is adapted to be disposed in an exhaust gas pipe of the internal combustion engine, comprising: a center element; a plurality of flow guide elements that influence the flow of a fluid stream when said mixer is placed in the fluid stream, said flow guide elements being disposed on the center element extending outwardly from the center element, each of said flow guide elements having a section that when viewed in a flow direction of the fluid stream is disposed inclined at a predetermined angle relative to a longitudinal axis of the flow guide elements, and each of said sections being disposed alternately facing in different directions so that a free flow cross-section between two adjacent flow guide elements having sections that face each other is reduced, and the free flow cross-section between two adjacent flow guide elements having sections that face away from each other is maintained; a frame element disposed on a front of each of the sections, when viewed opposite the flow direction of the fluid stream; and guide elements facing toward the center element and connected with the center element, said guide elements being disposed on the frame elements so that a free fluid passage space is formed by two of said guide elements that are connected with their longitudinal sides and that face in the direction of the center element.