发明公开
- 专利标题: PARTICULATE FILTER
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申请号: EP21947226.3申请日: 2021-12-09
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公开(公告)号: EP4338813A1公开(公告)日: 2024-03-20
- 发明人: TASAKI, Ryo , ONOE, Ryota , ITO, Masaya , IWAI, Momoko , MATSUSHITA, Yamato
- 申请人: CATALER CORPORATION
- 申请人地址: JP Kakegawa-shi, Shizuoka 437-1492 7800, Chihama
- 代理机构: Kramer Barske Schmidtchen Patentanwälte PartG mbB
- 优先权: JP2021104292 20210623
- 国际公布: WO2022269947 20221229
- 主分类号: B01D39/20
- IPC分类号: B01D39/20 ; B01J35/04 ; B01D53/94 ; F01N3/022 ; F01N3/035 ; F01N3/24 ; F01N3/28 ; B01J23/63 ; B01D46/00
摘要:
The technology disclosed herein provides a particulate filter that can appropriately avoid PM from passing toward the outlet cell and can exhibit an excellent PM capturing performance. The particulate filter 1 disclosed herein includes: an outercoat layer 20 provided on an inlet surface 16a of a partition 16 of a base material 10. The outercoat layer 20 at least includes: a lower layer 22 provided on the inlet surface 16a of the partition 16; and an upper layer 24 provided to cover the lower layer 22. The mean particle diameter of granules contained in the upper layer 24 is higher than the mean particle diameter of granules contained in the lower layer. The mean particle diameter of the granules in the lower layer 22 is from 0.4 µm to 2.0 µm inclusive, and the mean particle diameter of the granules in the upper layer 24 is from 2.0 µm to 7.0 µm inclusive. With such a configuration, PM can be captured in an inlet cell 12, thereby suitably avoiding PM from passing toward an outlet cell 14 and exhibiting an excellent PM capturing performance.
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