公开(公告)号：US20200256235A1

公开(公告)日：2020-08-13

申请号：US16864423

申请日：2020-05-01

Applicant: DENSO CORPORATION

Inventor： Yoichi KADOTA ,  Yasushi TAKAYAMA

IPC: F01N3/28 ,  F01N3/021

Abstract: The exhaust gas purification device of the present embodiment is provided in an exhaust gas flow path of an internal combustion engine. The exhaust gas purification device includes a honeycomb catalyst and a PM trapping filter. The honeycomb catalyst is formed by supporting a catalyst on a first substrate which is made of a promoter and has a honeycomb structure. The PM trapping filter is located on the exhaust gas downstream side of the honeycomb catalyst and includes a second substrate having a honeycomb structure, configured to be capable of trapping PM.

公开(公告)号：US20200222891A1

公开(公告)日：2020-07-16

申请号：US16831932

申请日：2020-03-27

Applicant: DENSO CORPORATION

Inventor： Junichi NARUSE ,  Takehiro TOKUNO ,  Kazuki HIRATA ,  Yasushi TAKAYAMA

IPC: B01J35/04 ,  C04B38/00 ,  F01N3/20 ,  B01D53/88

Abstract: An electrically heated catalyst includes a honeycomb substrate, an electrode, and a joining section. The honeycomb substrate and the joining section include matrices and conductive fillers. The matrices contain borosilicate including at least one of an alkali metal and an alkaline earth metal. The joining section preferably has a softening point lower than that of the honeycomb substrate.

公开(公告)号：US20200154524A1

公开(公告)日：2020-05-14

申请号：US16728261

申请日：2019-12-27

Applicant: DENSO CORPORATION

Inventor： Takehiro TOKUNO ,  Junichi NARUSE ,  Kazuki HIRATA ,  Mika KAWAKITA ,  Yasushi TAKAYAMA

IPC: H05B3/14 ,  C04B35/195 ,  F01N3/20

Abstract: An electrical resistor comprises a matrix composed of borosilicate containing at least one kind of alkali group atoms selected from the group consisting of Na, Mg, K, Ca, Li, Be, Rb, Sr, Cs, Ba, Fr, and Ra. The electrical resistor preferably has an electroconductive filler. A honeycomb structure comprises the electrical resistor. An electrically heated catalyst device comprises the honeycomb structure. The electrical resistor preferably has an electrical resistivity in a range from 0.0001 to 1 Ω·m and an electrical resistance increase rate in a range from 0.01×10−6 to 5.0×10−4/K in a temperature range from 25° C. to 500° C.

公开(公告)号：US20220013260A1

公开(公告)日：2022-01-13

申请号：US17448735

申请日：2021-09-24

Applicant: DENSO CORPORATION

Inventor： Takehiro TOKUNO ,  Junichi NARUSE ,  Yasushi TAKAYAMA

IPC: H01C13/00 ,  H05B3/18 ,  B01J35/04 ,  B01J21/08

Abstract: An electric resistor includes a particle continuous body in which a plurality of conductive particles are connected, and a matrix disposed around the particle continuous body. The particle continuous body has surface-joined portions in which surfaces of the conductive particles are joined to each other. Silicon particles are preferably used as the conductive particles. The average boundary line length of the surface-joined portions is preferably 0.5 μm or more.

公开(公告)号：US20200323040A1

公开(公告)日：2020-10-08

申请号：US16905113

申请日：2020-06-18

Applicant: DENSO CORPORATION

Inventor： Takehiro TOKUNO ,  Kazuki HIRATA ,  Yasushi TAKAYAMA

IPC: H05B3/12 ,  F01N3/20 ,  F01N3/28 ,  H01C7/00 ,  B01J35/10

Abstract: An electrical resistor includes borosilicate particles, Si-containing particles, and pore parts. The pore parts are constituted by gaps between the borosilicate particles and the Si-containing particles and surround the borosilicate particles and the Si-containing particles. A honeycomb structure includes the electrical resistor. An electric heating catalytic device has the honeycomb structure.

公开(公告)号：US20190314752A1

公开(公告)日：2019-10-17

申请号：US16452937

申请日：2019-06-26

Applicant: DENSO CORPORATION

Inventor： Yasushi TAKAYAMA ,  Shusaku YAMAMURA

IPC: B01D46/24 ,  B01D39/20 ,  C04B38/00 ,  C04B35/195

Abstract: Provided is a porous honeycomb filter comprising a porous first cell wall that permits exhaust gas to permeate, a second cell wall that permits exhaust gas to permeate than the first cell wall, and a cell that is surrounded by the first cell wall and the second cell wall to form an extending gas flow passage. The second cell wall has a smaller porosity than the first cell wall.

公开(公告)号：US20190091628A1

公开(公告)日：2019-03-28

申请号：US16065367

申请日：2016-11-16

Applicant: DENSO CORPORATION

Inventor： Yasushi TAKAYAMA ,  Yoichi KADOTA

IPC: B01D53/94 ,  B01D46/24 ,  B01J23/63 ,  B01J35/04 ,  F01N3/022 ,  F01N3/035

Abstract: Provided is an exhaust gas filter comprising a plurality of cell walls, a plurality of cell holes surrounded by the cell walls, and plug parts each sealing one of both ends of at least a part of the cell holes. The cell walls each have pores that allow adjacent cell holes to communicate with each other. The cell walls contain at least one promoter selected from the group consisting of ceria, zirconia, and a ceria-zirconia solid solution as a constituent thereof.

公开(公告)号：US20180229183A1

公开(公告)日：2018-08-16

申请号：US15751285

申请日：2016-07-29

Applicant: DENSO CORPORATION

Inventor： Yoichi KADOTA ,  Yasushi TAKAYAMA

IPC: B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  F01N3/28 ,  F01N3/08

Abstract: An exhaust gas purifying catalyst provided with a honeycomb structured porous material, a first catalyst consisting of Pd, a coating layer which is formed on a surface of the porous material and a second catalyst consisting of Rh which is loaded onto the coating layer. The porous material contains a catalyst support consisting of a ceria-zirconia solid solution, a composite consisting of alumina and an inorganic binder. A content of the catalyst support in the porous material exceeds 50 parts by mass of a total 100 parts by mass for the catalyst support and the composite. The coating layer is provided with a catalyst support consisting of ceria-zirconia solid solution.

公开(公告)号：US20180169626A1

公开(公告)日：2018-06-21

申请号：US15579660

申请日：2016-04-20

Applicant: DENSO CORPORATION

Inventor： Youichi KADOTA ,  Yasushi TAKAYAMA

IPC: B01J23/83 ,  B01J35/04 ,  B01J23/00 ,  B01D53/94 ,  C04B35/50

CPC classification number: B01J23/83 ,  B01D53/945 ,  B01J23/002 ,  B01J35/04 ,  C04B35/488 ,  C04B35/50 ,  C04B2235/3217 ,  C04B2235/322 ,  C04B2235/40 ,  C04B2235/405 ,  C04B2235/448 ,  C04B2235/6562

Abstract: The present invention relates to a honeycomb structure having promoter particles and a binder phase interposed between the promoter particles, and a method for manufacturing the same. The promoter particles contain at least first promoter particles made of a ceria-zirconia solid solution. The binder phase, in each of which a number of inorganic binder particles are aggregated with each other, with α-alumina being a main component, contain one or two of Fe and Cr dissolved in α-alumina. The honeycomb structure has a specific surface area at a ratio of 90% or more of after heating to before heating at a temperature of 1200° C.