Title:
EXHAUST GAS PURIFICATION FILTER
Document Type and Number:
WIPO Patent Application WO/2018/230611
Kind Code:
A1
Abstract:
An exhaust gas purification filter (1) comprises: a casing (11); a porous dividing wall (12) which partitions the inside of the casing into a honeycomb shape; and cells (13) enclosed by the dividing wall (12). In a pore path length distribution of the dividing wall (12) which is expressed by a frequency histogram per 10 μm of the pore path length of the dividing wall (12), the cumulative frequency is not less than 58%. The cumulative frequency is the maximum value of a value obtained by summing the frequencies of a total of three classes including the maximum peak frequency and adjacent to each other. Preferably, the dividing wall (12) has a gas permeation coefficient k of not less than 0.8 × 10-12m2.
Inventors:
ISHIHARA MIKIO (JP)
Application Number:
PCT/JP2018/022605
Publication Date:
December 20, 2018
Filing Date:
June 13, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F01N3/022; B01D39/20; B01D46/00; B01D53/94; B01J35/04
Domestic Patent References:
| WO2009122534A1 | 2009-10-08 | |||
| WO2005009922A1 | 2005-02-03 |
Foreign References:
| JP2013224609A | 2013-10-31 |
Attorney, Agent or Firm:
AICHI, TAKAHASHI, IWAKURA & ASSOCIATES (JP)
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