Device for purifying exhaust gases of a motor vehicle and method for the production thereof
An exhaust gas purification device and exhaust gas technology, which can be applied to exhaust devices, mufflers, machines/engines, etc., can solve problems such as uneven quality of welds, and achieve the effect of accurate adjustment.
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[0035] Figure 1 shows a vehicle exhaust purification device installed in the exhaust system. The device has a three-part housing 10 comprising a tube 12 longitudinally welded from sheet metal forming a surrounding sheath, and an end wall 14 mounted on the open end face of the tube 12 . A filter body 16 through which the exhaust gas flows is inserted into the housing 10 in the form of an integral diesel particulate filter or a catalytic converter (see arrow). The filter body 16 is surrounded by an insulating or intumescent pad 18 which supports the filter body 16 in the housing 10 with a non-positive fit. The pads 18 also function to compensate for tolerances and limit the deflecting forces exerted by the housing 10 on the filter body 16 .
[0036] Both the filter body 16 and the tube 12 have a geometry different from that of a circular ring and are delimited by three sections 20 that are planar or not curved at all and three relatively very curved sections 22 of the connectin...
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