A New Closing Method for Wall Flow Diesel Particulate Filters

A new method has been developed to close the ends of a wall flow filter used for removing particulate matter from diesel engine exhaust. In this method, the ends of the honeycomb structure are capped by deforming and closing the ends of the channel walls between the extrusion and firing stages of pr...

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Bibliographic Details
Published in:SAE transactions 1996-01, Vol.105, p.1-8
Main Authors: Stobbe, Per, Petersen, Henrik Guldberg, Sorenson, Spencer C., Høj, Jakob W.
Format: Article
Language:English
Online Access:Get full text
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Summary:A new method has been developed to close the ends of a wall flow filter used for removing particulate matter from diesel engine exhaust. In this method, the ends of the honeycomb structure are capped by deforming and closing the ends of the channel walls between the extrusion and firing stages of production. The method increases the amount of filtration area per filter volume for a given cell geometry conpared to the traditional plugging method, since the entire length of the honeycomb channels is used for filtration purposes. In addition, use of the capping method has a beneficial effect on the pressure loss characteristics of a filter with a given filtration area. These benefits are illustrated through experimental results.
ISSN:0096-736X
2577-1531