The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2024
Filed:
May. 24, 2022
Koji Sugiura, Toyota, JP;
Takeshi Hirabayashi, Toyota, JP;
Akemi Satou, Toyota, JP;
Keisuke Murawaki, Kakegawa, JP;
Takaya Ota, Toyota, JP;
Masatoshi Ikebe, Kakegawa, JP;
Kohei Takasaki, Kakegawa, JP;
Takeshi Morishima, Kakegawa, JP;
Koji Sugiura, Toyota, JP;
Takeshi Hirabayashi, Toyota, JP;
Akemi Satou, Toyota, JP;
Keisuke Murawaki, Kakegawa, JP;
Takaya Ota, Toyota, JP;
Masatoshi Ikebe, Kakegawa, JP;
Kohei Takasaki, Kakegawa, JP;
Takeshi Morishima, Kakegawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
CATALER CORPORATION, Kakegawa, JP;
Abstract
There is provided an exhaust gas purification device that shows a high HC removal performance under a condition in which a rich air-fuel mixture is introduced. The exhaust gas purification device includes a substrate, a first catalyst layer, and a second catalyst layer. The substrate includes an upstream end and a downstream end. The first catalyst layer is disposed on a surface of the partition wall in an upstream region including the upstream end of the substrate. The second catalyst layer is disposed inside the partition wall in a downstream region including the downstream end of the substrate. The first catalyst layer contains a first metal catalyst and alumina-zirconia composite oxide. The second catalyst layer contains a second metal catalyst.