公开(公告)号：US11143128B2

公开(公告)日：2021-10-12

申请号：US16726246

申请日：2019-12-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke Kayanuma ,  Kenji Furui ,  Koichiro Fukuda

IPC: F02D41/02 ,  F01N11/00 ,  F01N3/08

Abstract: An exhaust purification system of an internal combustion engine includes a catalyst arranged in an exhaust passage of the internal combustion engine and able to store oxygen, a storage amount calculating part configured to calculate an oxygen storage amount of the catalyst, a poisoning amount calculating part configured to calculate a poisoning amount of the catalyst, and an oxygen amount control part configured to control an amount of oxygen supplied to the catalyst based on the oxygen storage amount and the poisoning amount.