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:
Nov. 09, 2021
Filed:
Jul. 14, 2020
GM Global Technology Operations Llc, Detroit, MI (US);
Gongshin Qi, Troy, MI (US);
Wei Li, Troy, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A three-way catalyst device (TWC) includes a first catalytic brick (FCB) and a second catalytic brick (SCB) downstream from the FCB. The FCB has a first washcoat applied to a first support body including ceramic and/or metal oxide particles, Pd particles, and Rh particles, and has at most 35 g/ftPd and at most 7.5 g/ftRh. The SCB has a second washcoat applied to a second support body including ceramic and/or metal oxide particles, Pt particles, and Rh particles, and has a Pt loading of at most 35 g/ftPt and a Rh loading of at most 7.0 g/ftRh. The FCB can have 25 g/ftto 35 g/ftPd and 5.5 g/ftto 7.5 g/ftRh and the SCB can have 25 g/ftto 35 g/ftPt and 5.0 g/ftto 7.0 g/ftRh. The TWC can receive exhaust gas from an internal combustion engine powering a vehicle.