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:
Oct. 07, 2025
Filed:
Dec. 20, 2023
Aramco Services Company, Houston, TX (US);
Alexander Voice, Detroit, MI (US);
Kaustav Bhadra, Ann Arbor, MI (US);
Esam Hamad, Brighton, MI (US);
Praveen Kumar, New Hudson, MI (US);
SAUDI ARABIAN OIL COMPANY, Dhahran, SA;
Abstract
A device for reducing emissions from an internal combustion engine having a close-coupled catalyst including an underbody catalyst and a hydrocarbon trap disposed downstream of the close-coupled catalyst. The device includes a heat exchanger and a liquid water knockout disposed downstream of the close-coupled catalyst. The device includes a three-valve system configured to dynamically adjust a flow path of exhaust from the internal combustion engine through the underbody catalyst or both the underbody catalyst and the hydrocarbon trap to reduce emissions. A method for reducing emissions including feeding an exhaust gas from the internal combustion engine to the close-coupled catalyst, producing a catalyzed exhaust gas. The method includes flowing the catalyzed exhaust gas from the close-coupled catalyst to the three-valve system.