Title:
EXHAUST PURIFICATION FILTER
Document Type and Number:
WIPO Patent Application WO/2020/202253
Kind Code:
A1
Abstract:
The present invention provides an exhaust purification filter with which pressure loss can be reduced, the filter having high exhaust purification performance and granular-substance-filtering performance. The exhaust purification filter comprises a filter base material having a wall flow structure, and an exhaust purification catalyst supported on a dividing wall of the filter base material, the exhaust purification filter being such that: a median pore diameter (D50) of the filter base material according to a volumetric basis is 15 μm or greater; and the exhaust purification catalyst is unevenly supported on a high-density layer, in which the density of the exhaust purification catalyst is relatively high, and a low-density layer, in which the density of the exhaust purification catalyst is relatively low.
Inventors:
SEKI CHIAKI (JP)
IMAI YUSUKE (JP)
FURUKAWA ATSUSHI (JP)
MATSUO YUICHI (JP)
SATO NAOHIRO (JP)
IMAI YUSUKE (JP)
FURUKAWA ATSUSHI (JP)
MATSUO YUICHI (JP)
SATO NAOHIRO (JP)
Application Number:
PCT/JP2019/014004
Publication Date:
October 08, 2020
Filing Date:
March 29, 2019
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
F01N3/022; F01N3/035
Foreign References:
| JP2019506289A | 2019-03-07 | |||
| JP2011041933A | 2011-03-03 | |||
| JP2017082745A | 2017-05-18 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
Download PDF: