公开(公告)号：US10947877B2

公开(公告)日：2021-03-16

申请号：US15561683

申请日：2016-03-07

Applicant: DENSO CORPORATION

Inventor： Mikio Ishihara ,  Syusaku Yamamura ,  Akira Miyashita ,  Hironori Niwa

IPC: F01N3/022 ,  F01N3/28 ,  B01D53/94 ,  B01J35/04 ,  B01D39/20 ,  B01D46/24 ,  C04B38/00

Abstract: An exhaust gas purification filter has a honeycomb structure body and upstream side plug members. Cell holes are composed of inlet cell holes and outlet cell holes. In a central area and an outer peripheral area, a gas flow channel cross sectional area Sc1 of the outlet cell holes is larger than a gas flow channel cross sectional area So1 of the inlet cell holes, where Sc1

公开(公告)号：US10569207B2

公开(公告)日：2020-02-25

申请号：US15542215

申请日：2016-01-05

Applicant: DENSO CORPORATION

Inventor： Hironori Niwa ,  Syusaku Yamamura ,  Mikio Ishihara ,  Takao Mishima ,  Shingo Nakata ,  Hiroaki Fujii ,  Kouta Yamakoshi ,  Akira Miyashita

IPC: B01D46/24 ,  F01N3/022 ,  B01D39/20

Abstract: An exhaust gas filter purifies exhaust gas containing particulate matter emitted from an engine. The filter has cell walls and cells surrounded by the cell walls. Through pores formed in the cell walls, adjacent cells are communicated. The cells have open cells opening along an axial direction of the filter, and plugged cells. An upstream end part of the plugged cell is plugged by a plug member. On a cross section perpendicular to the axial direction, a flow-passage sectional area of the plugged cells is larger than a flow-passage sectional area of the open cells. A total length of the filter is not less than a first standard value and is not more than a critical length Lm determined by respective predetermined equations.