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公开(公告)号：US20180347425A1
公开(公告)日：2018-12-06
申请号：US15761607
申请日：2015-09-24
Applicant: HONDA MOTOR CO., LTD.
Inventor： Shinichiro OTSUKA , Kenji KATAYAMA , Noritaka MASUMITSU , Ryoko YAMADA
CPC classification number: 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
Abstract: 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.
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公开(公告)号：US20190271246A1
公开(公告)日：2019-09-05
申请号：US16413869
申请日：2019-05-16
Applicant: HONDA MOTOR CO., LTD.
Inventor： Shinichiro OTSUKA , Kenji KATAYAMA , Noritaka MASUMITSU , Ryoko YAMADA
Abstract: 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.
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公开(公告)号：US20180266289A1
公开(公告)日：2018-09-20
申请号：US15762682
申请日：2015-09-24
Applicant: HONDA MOTOR CO., LTD.
Inventor： Shinichiro OTSUKA , Noritaka MASUMITSU , Ryoko YAMADA
IPC: F01N3/035 , B01D53/94 , F01N3/022 , B01J29/06 , B01J29/068
CPC classification number: 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
Abstract: 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.
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