发明授权
- 专利标题： Method of and apparatus for controlling air fuel ratio of internal combustion engine
- 专利标题（中）： 内燃机空燃比控制方法及装置
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申请号： US372562申请日： 1989-06-28
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公开(公告)号： US5119629A公开(公告)日： 1992-06-09
- 发明人: Tateo Kume , Reijiro Komagome , Katsuo Akishino , Yoshiaki Kodama , Michiyasu Yoshida , Toshio Yuminaka
- 申请人： Tateo Kume , Reijiro Komagome , Katsuo Akishino , Yoshiaki Kodama , Michiyasu Yoshida , Toshio Yuminaka
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Jidosha Kogyo Kabushiki Kaisha
- 当前专利权人： Mitsubishi Jidosha Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-162312 19880629; JPX63-31491 19890209
- 主分类号： F02D41/14
- IPC分类号： F02D41/14
摘要：
A method of and an apparatus for controlling the air fuel ratio of an internal combustion engine by which the air fuel ratio can be controlled so that the exhaust gas purifying efficiency of a catalytic converter for purifying exhaust gas of the engine may be maximum. In the apparatus, exhaust gas of the engine is first passed through a catalytic converter and then is introduced into an oxygen concentration sensor of the .lambda. type. When the air fuel ratio is compulsorily varied, the compulsorily varied condition of the air fuel ratio such as an average of variations of the air fuel ratio (average air fuel ratio) is corrected in accordance with an output of the oxygen concentration sensor thereby to control the air fuel ratio so that the purifying efficiency of the exhaust gas purifying catalytic converter may be maximum.