公开(公告)号：US20170074194A1

公开(公告)日：2017-03-16

申请号：US15263513

申请日：2016-09-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuki MORITA ,  Kinji MORIHIRO

IPC: F02D41/14 ,  F01N3/18 ,  B01D53/94 ,  F02D41/38 ,  F02B37/00 ,  F01N11/00 ,  F02D13/02

CPC classification number: F02D41/1454 ,  B01D53/94 ,  B01D53/9445 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2255/908 ,  F01N3/18 ,  F01N11/007 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2900/1624 ,  F02B25/00 ,  F02B25/145 ,  F02B37/00 ,  F02B2075/125 ,  F02D13/0219 ,  F02D13/0261 ,  F02D41/0007 ,  F02D41/0295 ,  F02D41/1441 ,  F02D41/1475 ,  F02D41/38 ,  F02D2041/001 ,  F02D2041/389 ,  F02D2200/0814 ,  Y02T10/123 ,  Y02T10/144 ,  Y02T10/18 ,  Y02T10/22 ,  Y02T10/47

Abstract: The control system of the internal combustion engine comprises a control part controlling an air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst. The control part alternately sets a target air-fuel ratio between a rich air-fuel ratio and a lean air-fuel ratio and controls the air-fuel ratio of the exhaust gas so that an output air-fuel ratio of the air-fuel ratio sensor becomes the target air-fuel ratio. The control part corrects the output air-fuel ratio of the air-fuel ratio sensor so that when a scavenging occurs, the air-fuel ratio of the exhaust gas changes to a rich side more than an amount of deviation expected to occur in the output air-fuel ratio due to the occurrence of the scavenging. The control part increases a lean degree of the target air-fuel ratio when the scavenging occurs compared with when the scavenging does not occur.

Abstract translation: 内燃机的控制系统包括控制流入排气净化催化剂的废气的空燃比的控制部。 控制部交替地设定浓空燃比与稀空燃比之间的目标空燃比，并控制排气的空燃比，使空燃比的输出空燃比 传感器成为目标空燃比。 控制部分校正空燃比传感器的输出空燃比，使得当排气发生时，排气的空燃比变成富侧大于期望在输出中发生的偏差量 由于清空发生，空燃比。 与没有发生清扫时相比，当发生清扫时，控制部分增加目标空燃比的贫乏程度。