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:
Sep. 13, 2022
Filed:
Feb. 02, 2021
Saudi Arabian Oil Company, Dhahran, SA;
Emmanuel Laigle, Courbevoie, FR;
Christophe Chaillou, Rueil-Malmaison, FR;
Caroline Norsic, Rueil-Malmaison, FR;
André Nicolle, Nanterre, FR;
SAUDI ARABIAN OIL COMPANY, Dhahran, SA;
Abstract
Systems for reducing the content of residual pollutants from tailpipes emissions in an exhaust line having a cold part may include an ozone generation system; an MnOcatalyst; and a lean NOtrap (LNT) catalyst. In these systems, the ozone, MnOcatalyst, and LNT catalyst may be provided in the cold part of the exhaust line. In these systems, the residuals pollutants may be oxidized at temperatures of from about 20° C. to about 150° C. in rich or lean conditions and NOmay have a concentration of less than 0.1 mg/km in the tailpipe emissions downstream of the cold part of the exhaust line. Corresponding methods may include generating ozone from an ozonizer; injecting the ozone in a mixing chamber comprising the residual pollutants to form a first mixture; converting the first mixture using an MnOcatalyst to form a second mixture; and converting the second mixture using an LNT catalyst.