Title:
EXHAUST GAS PURIFICATION FILTER
Document Type and Number:
WIPO Patent Application WO/2016/158210
Kind Code:
A1
Abstract:
An exhaust gas purification filter 1 has a honeycomb structure 2 and upstream plug sections 3. A plurality of cell holes 5 comprise inlet cell holes 51 and outlet cell holes 52. The honeycomb structure 2 has a center region 23 and an outer peripheral region 24. In each of the center region 23 and the outer peripheral region 24, the flow passage cross-sectional area Sc2, So2 of an outlet cell hole 52 is greater than the flow passage cross-sectional area Sc1, So1 of an inlet cell hole 51. The flow passage cross-sectional area Sc1 is less than the flow passage cross-sectional area So1. A flow passage cross-sectional area ratio Rc which is the ratio of Sc1 to Sc2 is less than a flow passage cross-sectional area ratio Ro which is the ratio of So1 to So2. The inlet cell holes 51 and the outlet cell holes 52 are arranged alternately in a first direction X and a second direction Y. Cell walls 4 in the center region 23 have a greater thickness than cell walls 4 in the outer peripheral region 24.
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Inventors:
ISHIHARA MIKIO (JP)
YAMAMURA SYUSAKU (JP)
MIYASHITA AKIRA (JP)
NIWA HIRONORI (JP)
YAMAMURA SYUSAKU (JP)
MIYASHITA AKIRA (JP)
NIWA HIRONORI (JP)
Application Number:
PCT/JP2016/056918
Publication Date:
October 06, 2016
Filing Date:
March 07, 2016
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F01N3/022; B01D39/20; B01D46/00; B01D53/94; B01J35/04; F01N3/28
Domestic Patent References:
WO2008126433A1 | 2008-10-23 | |||
WO2012046484A1 | 2012-04-12 |
Foreign References:
JP2014069183A | 2014-04-21 | |||
JP2006281134A | 2006-10-19 | |||
JP2014054623A | 2014-03-27 | |||
JP2014054622A | 2014-03-27 |
Attorney, Agent or Firm:
KIKUCHI, YASUHIRO (JP)
Yasuhiro Kikuchi (JP)
Yasuhiro Kikuchi (JP)
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