Improvement of Pore Size Distribution of Wall Flow Type Diesel Particulate Filter

To reduce flow restriction of the wall flow type diesel particulate filters, the pore size distribution of DPF material was improved. Large pore material is preferred to reduce the flow restriction of the DPF. However pore diameter should be controlled within a certain limit to maintain high trappin...

Full description

Saved in:
Bibliographic Details
Main Authors: Kitagawa, Jun, Asami, Seiichi, Uehara, Kazuhiko, Hijikata, Toshihiko
Format: Report
Language:English
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To reduce flow restriction of the wall flow type diesel particulate filters, the pore size distribution of DPF material was improved. Large pore material is preferred to reduce the flow restriction of the DPF. However pore diameter should be controlled within a certain limit to maintain high trapping efficiency against diesel particulates. In order to solve these conflicting matters, the mean pore diameter was enlarged from 13μm of the current material to 20 μm or more, while maintaining the cumulative volume of pores above 100μm within 8% of the total pore volume. The safe limit against thermal shock failure of the improved DPF material having 9″D x 12″/, 12.5/ volume was also determined using diesel burner regeneration system.
ISSN:0148-7191
2688-3627
DOI:10.4271/920144