发明授权
- 专利标题： Method and apparatus for controlling air-fuel ratio in internal combustion engine
- 专利标题（中）： 用于控制内燃机空燃比的方法和装置
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申请号： US731524申请日： 1985-05-07
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公开(公告)号： US4719888A公开(公告)日： 1988-01-19
- 发明人: Nobuyuki Kobayashi , Takashi Hattori , Toshimitsu Ito
- 申请人： Nobuyuki Kobayashi , Takashi Hattori , Toshimitsu Ito
- 申请人地址： JPX Toyota
- 专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址： JPX Toyota
- 优先权： JPX59-89240 19840507
- 主分类号： F02D41/00
- IPC分类号： F02D41/00 ; F02D41/04 ; F02D41/10 ; F02D41/14 ; F02B3/00
摘要：
In an internal combustion engine, when the opening of a throttle valve is smaller than a relatively small definite value, the feedback of the air-fuel ratio of the engine is controlled so that the air-fuel ratio is brought close to a first target air-fuel ratio. When the opening of the throttle valve is equal to or larger than a relatively small definite value and is smaller than a relatively large definite value, the feedback of the air-fuel ratio of the engine is controlled so that the air-fuel ratio is brought close to a second target air-fuel ratio on the rich side with respect to the first target air-fuel ratio. Further, when the opening of the throttle valve is equal to or larger than the relatively large definite value, the air-fuel ratio of the engine is controlled to be a power fuel increment air-fuel ratio.
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