公开(公告)号：US20220186643A1

公开(公告)日：2022-06-16

申请号：US17547230

申请日：2021-12-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takahiro TSUKAGOSHI ,  Noriyasu KOBASHI ,  Takahiko FUJIWARA ,  Teruaki HAIBARA ,  Taku MIURA

IPC: F01N3/023 ,  F01N3/10 ,  F01N11/00 ,  F02D41/02 ,  F02D41/14

Abstract: The exhaust purification system of an internal combustion engine includes a filter trapping particulate matter in exhaust gas flowing through an exhaust passage of the internal combustion engine and supporting a three-way catalyst, and a filter regeneration part configured to perform regeneration processing for oxidizing and removing particulate matter deposited on the filter when predetermined conditions are satisfied. The filter regeneration part is configured to increase an NO concentration in exhaust gas flowing into the filter when the predetermined conditions are satisfied compared to when the predetermined conditions are not satisfied.