发明名称 |
Air-fuel ratio control system for internal combustion engines |
摘要 |
An air-fuel ratio control system for an internal combustion engine includes a LAF sensor and an O2 sensor arranged in an exhaust pipe at respective locations upstream and downstream of a catalytic converter. A desired air-fuel ratio coefficient used in calculating an amount of fuel supplied to the engine is calculated based on operating conditions of the engine, and corrected based on output from the O2 sensor. The air-fuel ratio of a mixture supplied to the engine is feedback-controlled to a stoichiometric air-fuel ratio based on the corrected desired air-fuel ratio coefficient. When the output from the O2 sensor falls within a predetermined range, the desired air-fuel ratio coefficient is not corrected, but held at an immediately preceding value thereof.
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申请公布号 |
US5615550(A) |
申请公布日期 |
1997.04.01 |
申请号 |
US19950382605 |
申请日期 |
1995.02.02 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
OGAWA, KEN;EHARA, YASUNORI |
分类号 |
F02D41/14;(IPC1-7):F01N3/28 |
主分类号 |
F02D41/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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