公开(公告)号：US11105242B2

公开(公告)日：2021-08-31

申请号：US16864423

申请日：2020-05-01

Applicant: DENSO CORPORATION

Inventor： Yoichi Kadota ,  Yasushi Takayama

IPC: F01N3/021 ,  F01N3/28

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：US09550169B2

公开(公告)日：2017-01-24

申请号：US14847284

申请日：2015-09-08

Applicant: DENSO CORPORATION

Inventor： Yoichi Kadota

IPC: B01J23/10 ,  C04B38/00 ,  C04B35/50 ,  B01J37/00 ,  B01J35/04 ,  B01D53/94 ,  B01J37/08 ,  B01J23/63 ,  B01J35/00 ,  C04B111/00

CPC classification number: B01J23/10 ,  B01D53/9445 ,  B01D2255/102 ,  B01D2255/2092 ,  B01D2255/407 ,  B01J23/63 ,  B01J35/002 ,  B01J35/04 ,  B01J37/0009 ,  B01J37/08 ,  C04B35/486 ,  C04B35/50 ,  C04B38/0006 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/5436 ,  C04B2235/5454 ,  C04B2235/6584 ,  C04B2235/85 ,  Y02T10/22

Abstract: A honeycomb structure body has promoter particles made of ceria-zirconia solid solution, and inorganic binder particles made of alumina arranged between the promoter particles, and a cerium aluminate phase formed on a boundary surface between the promoter particles and the inorganic binder particles. Further, a method of producing the honeycomb structure body has at least first and second steps. The first step molds raw material to form a honeycomb molded body. The raw material has a mixture of promoter particles and a sol containing inorganic binder particles. The second step fires the honeycomb molded body in an atmosphere having an oxygen concentration of not more than 0.5 vol. % to produce the honeycomb structure body.

Abstract translation: 蜂窝结构体具有由二氧化铈 - 氧化锆固溶体制成的促进剂颗粒和由促进剂颗粒之间的氧化铝制成的无机粘结剂颗粒和在促进剂颗粒和无机粘合剂颗粒之间的边界表面上形成的铝酸铝相。 此外，蜂窝结构体的制造方法至少具有第一和第二步骤。 第一步模制原料以形成蜂窝成型体。 原料具有促进剂颗粒和含有无机粘结剂颗粒的溶胶的混合物。 第二步在氧浓度不超过0.5体积的气氛中使蜂窝成型体发火。 ％以生产蜂窝结构体。

公开(公告)号：US09718053B2

公开(公告)日：2017-08-01

申请号：US14820719

申请日：2015-08-07

Applicant: DENSO CORPORATION

Inventor： Yoichi Kadota ,  Tomohiko Nakanishi ,  Kensuke Takizawa

IPC: B01J35/04 ,  B01J23/63 ,  B01J23/10 ,  B01J35/00 ,  B01J37/02 ,  C04B38/00 ,  B01D53/94 ,  B01J35/02 ,  B01J37/00

CPC classification number: B01J35/04 ,  B01D53/9445 ,  B01D2255/102 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/50 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/023 ,  B01J37/0018 ,  B01J37/0045 ,  C04B38/0006 ,  Y02T10/22

Abstract: A porous honeycomb structure including multiple co-catalyst particles and multiple inorganic binder particles of smaller particle diameter than the co-catalyst particles. Each co-catalyst particle is comprised of a ceria-zirconia solid solution. The inorganic binder particles reside between the co-catalyst particles. In the honeycomb structure, an exposure fraction of the co-catalyst particles from the inorganic binder particles on a cross-section of the honeycomb structure is within a range of 3 to 10%.