Patent ID: 7582266
Filing Date: 2009-09-01
Classification: F01N

Abstract:
1. A honeycomb body for an exhaust system of an internal combustion engine, the honeycomb body comprising: an axial length having a first end and second end opposite said first end; channels through which exhaust gas can flow, said channels being substantially separate from one another, each of said channels extending from said first end to said second end and opening at both of said ends, the exhaust gas flowing through said channels in a main direction of flow; said channels including at least a first subset of channels and a second subset of channels, and at least one of said subsets of channels having cross-sectional areas changing over said axial length, causing a transient time of the exhaust gas to be different in said first and second subsets of channels, said cross-sectional area of at least one of said subsets of channels decreasing in said main direction of flow.