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:
Jul. 03, 2018
Filed:
Dec. 19, 2013
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Yuki Aoki, Seto, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
Provided is a catalytic converter capable of obtaining superior NOx purification performance while reducing the amount of a noble metal catalyst. A catalytic converterincludes: a substratehaving a cell structure in which exhaust gas flows; and catalyst layersthat are formed on cell wall surfacesof the substrate. The catalyst layersinclude a first catalyst layerdisposed on an upstream side of the substratein an exhaust gas flow direction and a second catalyst layerdisposed on a downstream side of the substrate in the exhaust gas flow direction. The first catalyst layeris formed of a support and rhodium which is a noble metal catalyst supported on the support. The second catalyst layeris formed of a support and palladium or platinum which is a noble metal catalyst supported on the support. The first catalyst layeris formed in a range of 80% to 100% of a total length of the substratestarting from an end of the substrate on the upstream side, and the second catalyst layeris formed in a range of 20% to 50% of the total length of the substratestarting from an end of the substrate on the downstream side.