Patent ID: 7059118

Claim:
A mixing device for mixing an exhaust gas of an internal combustion engine flowing in an exhaust pipe with a reducing agent comprising; a mixing body that is positionable in the exhaust pipe, the mixing body having a gas impact surface and a spray impact surface so that the exhaust gas flowing out of the internal combustion engine is able to strike the gas impact surface and reducing agent, which is suppliable transversely to the exhaust gas flow, is able to strike the spray impact surface; wherein: the spray impact surface and the gas impact surface form disjointed sub-areas of the surface of the mixing body, the spray impact surface and the gas impact surface are located on diametrically opposed sides of the mixing body, the gas impact surface has the shape of an arch, the gas impact surface is formed by a surface of a part of the mixing body tapering centrically in a direction of flow in the exhaust pipe so that only a slight flow resistance is imposed on the exhaust gas, and at least one of a holding device for the mixing body and the mixing body include holes connecting spaces in front of and behind the mixing device.