公开(公告)号：US11168597B2

公开(公告)日：2021-11-09

申请号：US16248865

申请日：2019-01-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koichiro Fukuda

IPC: F01N3/20 ,  B01D53/94 ,  F01N9/00 ,  B60K6/22 ,  B60W20/00 ,  B60W10/06 ,  B60W10/08 ,  F01N3/08 ,  F02D41/02 ,  F02D41/04 ,  B60W20/16

Abstract: In a hybrid vehicle, suppression of an amount of fuel consumed for reducing NOx stored in an NSR catalyst and suppression of deterioration in exhaust gas components due to unreacted fuel flowing out from the NSR catalyst are made compatible with each other. Predetermined power source control is carried out in accompany with the execution of NOx reduction processing to supply fuel to the NSR catalyst. In the predetermined power source control, an engine rotation speed of an internal combustion engine is made to decrease or an operation of the internal combustion engine is made to stop, and an electric motor is controlled so as to compensate for required torque. Further, during a period of execution of the predetermined power source control, a lower limit value of a predetermined target SOC range for an SOC of a battery is changed to a value smaller than at times other than the period of execution of the predetermined power source control.

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.