公开(公告)号：US20180347425A1

公开(公告)日：2018-12-06

申请号：US15761607

申请日：2015-09-24

申请人： HONDA MOTOR CO., LTD.

发明人： Shinichiro OTSUKA ,  Kenji KATAYAMA ,  Noritaka MASUMITSU ,  Ryoko YAMADA

IPC分类号： F01N3/10 ,  B01D53/94 ,  B01D46/24 ,  F01N3/022 ,  F02D41/30 ,  F02D41/02

CPC分类号： F01N3/101 ,  B01D46/2429 ,  B01D46/247 ,  B01D46/2474 ,  B01D53/945 ,  B01D53/9454 ,  B01D53/9477 ,  B01D2046/2433 ,  B01D2046/2437 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2258/014 ,  B01D2279/30 ,  F01N3/022 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/10 ,  F01N13/02 ,  F01N2250/02 ,  F01N2330/02 ,  F01N2560/025 ,  F01N2560/14 ,  F02D41/0235 ,  F02D41/30 ,  Y02T10/22

摘要： An exhaust purification system includes an LAF sensor provided in an exhaust pipe and generates a signal corresponding to an air-fuel ratio of exhaust gas. An upstream catalytic converter is downstream of the LAF sensor and has a catalyst to purify the exhaust gas. An O2 sensor is downstream of the upstream catalytic converter, and generates a signal corresponding to the air-fuel ratio of the exhaust gas. A GPF is downstream of a the O2 sensor and purifies the exhaust gas. An ECU controls an air-fuel mixture in an engine using output signal KACT of the LAF sensor and an output signal VO2 of the O2 sensor such that the air-fuel ratio of exhaust gas flowing into the GPF converges to a target value near the stoichiometric ratio. The GPF has a filter substrate and a downstream TWC supported by a partition of the filter substrate.

公开(公告)号：US20240115998A1

公开(公告)日：2024-04-11

申请号：US18263646

申请日：2022-01-26

申请人： HONDA MOTOR CO., LTD. ,  N.E. CHEMCAT CORPORATION

发明人： Takeshi MORI ,  Shinichiro OTSUKA ,  Yoshiaki HATAKEYAMA ,  Mahiro SHIROTORI

IPC分类号： B01D53/94 ,  B01J21/04 ,  B01J21/06 ,  B01J23/10 ,  B01J23/44 ,  B01J23/46 ,  B01J35/57 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  F01N3/022

CPC分类号： B01D53/945 ,  B01J21/04 ,  B01J21/066 ,  B01J23/10 ,  B01J23/44 ,  B01J23/464 ,  B01J35/57 ,  B01J37/0242 ,  B01J37/04 ,  B01J37/08 ,  F01N3/0222 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2063 ,  B01D2255/407 ,  B01D2255/908 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/012

摘要： It is an object of the present invention to provide an exhaust gas purifying catalyst filter which has enhanced soot collection performance without increasing pressure loss caused by the formation of a catalyst layer in a partition wall of a wall flow type substrate.
A gasoline engine exhaust gas purifying catalyst filter for purifying exhaust gas of a gasoline engine includes: a wall flow type substrate in which an introduction-side cell having an open exhaust gas introduction-side end, and a discharge-side cell adjacent to the introduction-side cell and having an open exhaust gas discharge-side end are defined by a porous partition wall; and a catalyst layer formed in a pore of the partition wall. An absolute value of a maldistribution degree of the catalyst layer formed in the pore of the partition wall is 4.50 or less. A wash coat amount, excluding a mass of a platinum group, of the catalyst layer formed in the pore of the partition wall, is 40 g/L or more and 50 g/L or less. The catalyst layer formed in the pore of the partition wall is a single layer. The catalyst layer is free of Ba.

公开(公告)号：US20190271246A1

公开(公告)日：2019-09-05

申请号：US16413869

申请日：2019-05-16

申请人： HONDA MOTOR CO., LTD.

发明人： Shinichiro OTSUKA ,  Kenji KATAYAMA ,  Noritaka MASUMITSU ,  Ryoko YAMADA

IPC分类号： F01N3/10 ,  F01N3/022 ,  F01N3/035 ,  B01D53/94 ,  F01N13/02 ,  B01D46/24 ,  F02D41/02 ,  F02D41/30

摘要： An exhaust purification system includes an LAF sensor provided in an exhaust pipe and generates a signal corresponding to an air-fuel ratio of exhaust gas. An upstream catalytic converter is downstream of the LAF sensor and has a catalyst to purify the exhaust gas. An O2 sensor is downstream of the upstream catalytic converter, and generates a signal corresponding to the air-fuel ratio of the exhaust gas. A GPF is downstream of a the O2 sensor and purifies the exhaust gas. An ECU controls an air-fuel mixture in an engine using output signal KACT of the LAF sensor and an output signal VO2 of the O2 sensor such that the air-fuel ratio of exhaust gas flowing into the GPF converges to a target value near the stoichiometric ratio. The GPF has a filter substrate and a downstream TWC supported by a partition of the filter substrate.

公开(公告)号：US20180266289A1

公开(公告)日：2018-09-20

申请号：US15762682

申请日：2015-09-24

申请人： HONDA MOTOR CO., LTD.

发明人： Shinichiro OTSUKA ,  Noritaka MASUMITSU ,  Ryoko YAMADA

IPC分类号： F01N3/035 ,  B01D53/94 ,  F01N3/022 ,  B01J29/06 ,  B01J29/068

CPC分类号： F01N3/035 ,  B01D53/945 ,  B01D53/9454 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/908 ,  B01D2255/9155 ,  B01D2258/014 ,  B01J29/061 ,  B01J29/068 ,  F01N3/0222 ,  F01N3/101 ,  F01N2250/02 ,  F01N2330/06 ,  F01N2330/30 ,  F01N2370/02 ,  F01N2370/04 ,  F01N2510/06 ,  Y02T10/22

摘要： Provided is a GPF capable of exhibiting better than conventional three-way purification function. A gasoline particulate filter (GPF) that is provided in an exhaust pipe of an engine and that performs purification by capturing particulate matter (PM) in exhaust gas is provided with a filter substrate in which a plurality of cells extending from an exhaust gas inflow-side end face to an outflow-side end face are defined by porous partition walls and in which openings at the inflow-side end face and openings at the outflow-side end face of the cells are alternately sealed; and a three-way catalyst (TWC) supported by the partition wall. The three-way catalyst is the GPF comprising a catalytic metal containing at least Rh, and a composite oxide having an oxygen storage capacity and containing Nd and Pr in a crystal structure.