发明申请
- 专利标题: AIR-FUEL RATIO CONTROL SYSTEM OF A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE
- 专利标题(中): 多缸内燃机的空燃比比控制系统
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申请号: US12443782申请日: 2007-08-13
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公开(公告)号: US20100024790A1公开(公告)日: 2010-02-04
- 发明人: Takahiko Fujiwara , Norihisa Nakagawa , Taiga Hagimoto , Junichi Kako , Naoto Kato , Shuntaro Okazaki , Koji Ide
- 申请人: Takahiko Fujiwara , Norihisa Nakagawa , Taiga Hagimoto , Junichi Kako , Naoto Kato , Shuntaro Okazaki , Koji Ide
- 优先权: JP2006-278641 20061012
- 国际申请: PCT/JP2007/066064 WO 20070813
- 主分类号: F02D41/00
- IPC分类号: F02D41/00
摘要:
An air-fuel ratio control system of a multi-cylinder internal combustion engine provided with a throttle valve and opening characteristic control means, which system performs feedback control of an air-fuel ratio based on an output of a sensor detecting an air-fuel ratio of exhaust gas and is capable of performing more accurate air-fuel ratio control, is provided. In the feedback control, the relationship of the output of the sensor and a feedback value is corrected based on a feedback learning correction value learned and determined based on the output of the sensor during the feedback control, and, when newly learning the feedback learning correction value, the intake air amount is controlled by only the throttle valve.