| 摘要 |
There is disclosed an air-fuel ratio control system for an automotive engine having a fuel injection system including injectors, an intake air quantity measuring system including an intake air quantity sensor, and a canister purge control system corresponding to a necessity. The air-fuel ratio control system comprises a learning designation circuit for selecting a learning region for the measuring system or the injection system, a measuring system learning circuit for learning a correction amount of the measuring system responsive to the selection of the designation circuit, an injection system learning circuit for learning a correction amount of the injection system responsive to the selection, and a fuel quantity setting circuit for setting the quantity in dependency on an engine speed and an intake air quantity and for setting an actual fuel injection quantity by correcting the basic fuel injection quantity with the both correction amount.
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