Exhaust gas pipe with catalyst carrier body exposed to a helical flow
First Claim
1. Exhaust gas pipe, comprising a plurality of segments forming at least one angular bend, said segments including a first segment having a given diameter, an adaptor communicating with said first segment, a second segment communicating with said adaptor and having a diameter larger than said given diameter, and a honeycomb body being disposed directly downstream of said adaptor and having a side with an end surface facing towards an exhaust gas flow, said adaptor having a shape forcing exhaust gas to approach said end surface in a curved path having a curvature and pitch reducing contact between exhaust gas having already been deflected and exhaust gas newly flowing into said adaptor.
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Accused Products
Abstract
An exhaust gas pipe includes a plurality of segments forming at least one angular bend which preferably includes an angle of approximately 90°. The segments include a first segment having a given diameter. An adaptor communicates with the first segment. A second segment communicates with the adaptor and has a diameter larger than the given diameter. A honeycomb body is disposed directly downstream of the adaptor and has a side with an end surface facing towards an exhaust gas flow. The adaptor may have a shape forcing exhaust gas to approach the end surface in a helical and/or spiral path having a curvature and pitch reducing or preventing contact between exhaust gas having already been deflected and exhaust gas newly flowing into the adaptor. The adaptor may have an inside with approximately the shape of a coiled and/or spiral tubing segment approaching the end surface and being cut open in direction toward the end surface.
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Citations
46 Claims
- 1. Exhaust gas pipe, comprising a plurality of segments forming at least one angular bend, said segments including a first segment having a given diameter, an adaptor communicating with said first segment, a second segment communicating with said adaptor and having a diameter larger than said given diameter, and a honeycomb body being disposed directly downstream of said adaptor and having a side with an end surface facing towards an exhaust gas flow, said adaptor having a shape forcing exhaust gas to approach said end surface in a curved path having a curvature and pitch reducing contact between exhaust gas having already been deflected and exhaust gas newly flowing into said adaptor.
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7. Exhaust gas pipe, comprising a plurality of segments forming at least one angular bend, said segments including a first segment having a given cross section, an adaptor communicating with said first segment, a second segment communicating with said adaptor and having a cross section larger than said given cross section, and a honeycomb body being disposed directly downstream of said adaptor and having a side with an end surface facing towards an exhaust gas flow, said adaptor having an inside with approximately the shape of a curved tubing segment approaching said end surface and being cut open in direction toward said end surface.
Specification