公开(公告)号：US10344655B2

公开(公告)日：2019-07-09

申请号：US15518011

申请日：2015-10-07

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Yuta Morishita ,  Masahiko Takeuchi ,  Naoto Miyoshi ,  Akemi Sato ,  Daisuke Ochiai

IPC: B01D53/94 ,  B01J35/04 ,  B01J23/46 ,  B01J37/02 ,  F01N3/22 ,  F01N3/28 ,  F01N3/035 ,  F01N3/022

Abstract: An exhaust gas purification catalyst having an excellent exhaust partition ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes a substrate having a wall-flow structure with partition wall, upstream coating section formed in portions of partition wall facing entrance cell, from exhaust inlet-side end in the extending direction of partition wall, and downstream coating section formed in portions of partition wall facing exit cell, from exhaust outlet-side end in the extending direction, having a length shorter than the entire length Lw of the partition wall. In downstream coating section, a catalytic metal is concentrated in the surface layer in contact with exit cell.

公开(公告)号：US10183253B2

公开(公告)日：2019-01-22

申请号：US15517978

申请日：2015-10-06

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Tatsuya Ohashi ,  Naoto Miyoshi ,  Masahiko Takeuchi ,  Akemi Sato

IPC: B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  B01J35/00 ,  F01N3/035 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  F01N3/28

Abstract: The exhaust gas purification device is provided with a wall flow structure substrate that has an entry-side cell, an exit-side cell and a porous partition, first catalyst parts which are formed in small pores having a relatively small pore diameter among internal pores in the partition, and second catalyst parts which are formed in large pores having a relatively large pore diameter among the internal pores in the partition. The first catalyst parts and the second catalyst parts each contain a carrier and at least one type of noble metal from among Pt, Pd and Rh supported on the carrier. The noble metal content in the first catalyst parts is smaller than the noble metal content in the second catalyst parts per 1 liter of substrate volume.

公开(公告)号：US10159935B2

公开(公告)日：2018-12-25

申请号：US15517990

申请日：2015-10-07

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Masahiko Takeuchi ,  Naoto Miyoshi ,  Akemi Sato

IPC: B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  F01N3/28 ,  F01N3/022

Abstract: An exhaust gas purification catalyst having an excellent exhaust gas purification ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes entrance cell, exit cell, and a wall-flow substrate having partition wall to separate these cell, a catalytic layer formed from exhaust inlet-side ends in the extending direction in sections of the interior of partition wall facing entrance cell, and a catalytic layer formed on the surface of partition wall facing exit cell from exhaust outlet-side ends in the extending direction of partition wall, having a length shorter than the entire partition wall length.

公开(公告)号：US11291951B2

公开(公告)日：2022-04-05

申请号：US16099163

申请日：2017-05-17

Applicant: CATALER CORPORATION

Inventor： Yoritsugu Shino ,  Tsuyoshi Ito ,  Keisuke Murashige ,  Akio Kubota

IPC: B01D53/94 ,  B01J23/58 ,  F01N3/10 ,  F01N3/28 ,  F02B63/02 ,  B01D53/86 ,  B01J23/63 ,  B01J23/00 ,  B01J23/56 ,  B01J21/04

Abstract: An exhaust gas purifying catalyst for 2-stroke general-purpose engines, which is characterized in that: the exhaust gas purifying catalyst includes a base and a coat layer on the base; the coat layer contains noble metals and metal oxides; the noble metals include palladium and one or more elements selected from among platinum and rhodium; the zirconia content in the coat layer is 0.07 mole or less per 100 g of the metal oxides contained in the coat layer; and the total content of one or more metal oxides selected from among lanthana and alkaline earth metal oxides in the coat layer is 0.05 mole or more per 100 g of the metal oxides contained in the coat layer.

公开(公告)号：US10201805B2

公开(公告)日：2019-02-12

申请号：US15518086

申请日：2015-10-06

Applicant: CATALER CORPORATION

Inventor： Tatsuya Ohashi ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Ryota Onoe ,  Naoto Miyoshi ,  Masahiko Takeuchi ,  Akemi Sato

IPC: B01J23/00 ,  B01J23/10 ,  B01J23/63 ,  B01D53/94 ,  B01J35/04 ,  F01N3/10 ,  F01N3/28 ,  F01N3/02 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  F01N3/08

Abstract: A exhaust gas purification apparatus is provided with; a substrate having a wall-flow structure and including entry-side cells, exit-side cells, and a porous partition; a first catalyst region formed in small diameter pores having relatively small pore diameters among internal pores in the partition; and a second catalyst region formed in large diameter pores having relatively large pore diameters among the internal pores in the partition. The first catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support, while the second catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support and other than at least the precious metal present in the first catalyst region.

公开(公告)号：US09981216B2

公开(公告)日：2018-05-29

申请号：US15100747

申请日：2014-12-01

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Tatsuya Ohashi

IPC: B01D50/00 ,  B01D59/50 ,  B01D46/24 ,  F01N3/022

CPC classification number: B01D46/247 ,  F01N3/0222 ,  F01N2330/30 ,  F01N2330/34 ,  F01N2330/38

Abstract: Particulate filter provided in the exhaust gas purification device includes: a wall-flow part having an inlet-side cell that is open only at an end on an exhaust gas inflow side, outlet-side cell adjacent to this inlet-side cell and is open only at an end on an exhaust gas outflow side, a porous wall partitions the inlet-side cell from the outlet-side cell; a straight-flow part having a through cell that penetrates the filter in axial direction and is open at the end on the exhaust gas inflow side as well as the end on the exhaust gas outflow side. In a cross section of the filter orthogonal to its axial direction, cross-sectional areas of the inlet-side cell and outlet-side cell present in an outer peripheral region of the cross section are larger than cross-sectional areas of the inlet-side cells and the outlet-side cell in a central region of the cross section.

公开(公告)号：US11524284B2

公开(公告)日：2022-12-13

申请号：US16758561

申请日：2018-09-14

Applicant: CATALER CORPORATION

Inventor： Kohei Takasaki ,  Yuji Matsuhisa ,  Nobuaki Bando ,  Hiroshi Ono ,  Tomohito Mizukami ,  Tsuyoshi Ito

IPC: B01J21/00 ,  B01J23/63 ,  B01J35/04 ,  B01D53/94 ,  F01N3/28 ,  B01J37/02 ,  B01J37/08

Abstract: An exhaust gas purification device has a metal substrate and a catalyst layer on the metal substrate, wherein the metal substrate is a wound body of one or a plurality of metal foils, at least one of the one or a plurality of metal foils is a perforated metal foil having holes, the catalyst layer contains noble metal catalyst particles and a carrier for carrying the noble metal catalyst particles, and more noble metal catalyst particles are present in the catalyst layer on side surfaces of holes, which face an upstream side of an exhaust gas flow, than in the catalyst layer on side surfaces of holes, which face a downstream side of the exhaust gas flow.

公开(公告)号：US10357744B2

公开(公告)日：2019-07-23

申请号：US15515830

申请日：2015-10-06

Applicant: CATALER CORPORATION

Inventor： Tatsuya Ohashi ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Ryota Onoe ,  Naoto Miyoshi ,  Masahiko Takeuchi ,  Akemi Sato

IPC: F01N3/28 ,  B01D53/94 ,  F01N13/00 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  F01N3/035 ,  B01J37/02 ,  B01J23/40

Abstract: An exhaust gas purification device of the present invention is provided with: a substrate of wall flow structure having an inlet cell, an outlet cell and a porous partition wall; an upstream catalyst layer, provided inside the partition wall and disposed in an upstream portion of the substrate including an exhaust gas inflow end section; and a downstream catalyst layer, provided inside the partition wall and disposed in a downstream portion of the substrate including an exhaust gas outflow end section. The upstream catalyst layer and the downstream catalyst layer each contain a carrier and at least one noble metal from among Pt, Pd and Rh, supported on the carrier. The noble metal in the upstream catalyst layer and the noble metal in the downstream catalyst layer are different from each other.

公开(公告)号：US10156170B2

公开(公告)日：2018-12-18

申请号：US15100716

申请日：2014-12-01

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Tatsuya Ohashi

IPC: F01N3/02 ,  F01N3/022 ,  F01N3/035 ,  B01D46/24

Abstract: The exhaust gas purification device provided with a particulate filter disposed in an exhaust passage of an internal combustion engine and capturing particulate matter in exhaust gas discharged from the internal combustion engine. The particulate filter is provided with a wall-flow part having an inlet-side cell that is open only at an end on an exhaust gas inflow side, an outlet-side cell that is adjacent to this inlet-side cell and is open only at an end on an exhaust gas outflow side, and a porous wall that partitions the inlet-side cell from the outlet-side cell, and is also provided with a straight-flow part having a through cell that penetrates the filter in an axial direction thereof and is open at the end on the exhaust gas inflow side as well as the end on the exhaust gas outflow side.

公开(公告)号：US10688476B2

公开(公告)日：2020-06-23

申请号：US15509976

申请日：2015-09-07

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Yuta Morishita

IPC: F01N3/28 ,  F01N3/10 ,  B01J23/46 ,  B01J23/63 ,  B01D53/94 ,  B01J21/04 ,  B01J23/10 ,  B01J23/44 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/04

Abstract: Provided is an exhaust gas purification catalyst in which the performance of a catalyst metal can be brought out properly, the purification catalyst boasting excellent purification performance during warm-up of an internal combustion engine. The exhaust gas purification catalyst 10 is provided with a substrate 1 and a catalyst layer. A leading end section 1a positioned upstream in the direction of exhaust gas flow (arrow) has a portion in which the flow rate of exhaust gas is relatively high and a portion in which the flow rate of exhaust gas is relatively low during warm-up of the internal combustion engine. The catalyst, layer in the portion of relatively high flow rate of exhaust gas has a high density section 6 in which a noble metal, is supported at relatively high density. The high density section 6 is formed to be shorter than the total length of the exhaust gas purification catalyst 10 from the leading end section 1a in the direction of exhaust gas flow.