公开(公告)号：US12228056B1

公开(公告)日：2025-02-18

申请号：US18390839

申请日：2023-12-20

Applicant: ARAMCO SERVICES COMPANY

Inventor： Alexander Voice ,  Kaustav Bhadra ,  Esam Hamad ,  Praveen Kumar

IPC: F01N13/00 ,  F01N3/08 ,  F01N3/00 ,  F01N3/10 ,  F01N3/20

Abstract: A device for reducing emissions from an internal combustion engine having a close-coupled catalyst including an electrically-heated 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 valve-less system configured to dynamically adjust a flow path of exhaust from the internal combustion engine through the electrically-heated 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 valve-less system.