Title:
パティキュレートフィルタ
Document Type and Number:
Japanese Patent JP7386626
Kind Code:
B2
Abstract:
A particulate filter disclosed here includes a base material 10 having a wall-flow structure including porous partition walls 16 partitioning inlet cells 12 and outlet cells 14, and wash-coating layers 20 held inside the partition walls 16. The wash-coating layers 20 include inlet layers 22 each formed from a vicinity of an end portion at an exhaust gas inflow side XI to have a predetermined length and a predetermined thickness and outlet layers 24 each formed from a vicinity of an end portion at an exhaust gas outflow side X2 to have a predetermined length and a predetermined thickness. The inlet layers 22 and the outlet layers 24 partially overlap with each other. The inlet layers 22 of the particulate filter contain substantially no noble metal catalyst, and the outlet layers 24 contain a noble metal catalyst. Accordingly, PM collection performance can be easily enhanced in an inlet region, and high gas distributability (pressure loss suppression performance) can be maintained in the outlet region. Accordingly, it is possible to provide a particulate filter capable of achieving high levels of PM collection performance and pressure loss suppression performance.
Inventors:
Ryota Onoe
田▲崎▼ 凌
Momoko Iwai
Yamato Matsushita
田▲崎▼ 凌
Momoko Iwai
Yamato Matsushita
Application Number:
JP2019112755A
Publication Date:
November 27, 2023
Filing Date:
June 18, 2019
Export Citation:
Assignee:
Cataler Co., Ltd.
International Classes:
B01D53/94; B01D39/20; B01D46/00; B01J23/58; B01J35/04; F01N3/022; F01N3/035
Domestic Patent References:
| JP2018515328A | ||||
| JP2017510439A | ||||
| JP2008510605A | ||||
| JP2007132240A | ||||
| JP2009243273A | ||||
| JP2013015087A |
Attorney, Agent or Firm:
Makoto Abe
Koji Amano
Koji Amano
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