| 摘要 |
PROBLEM TO BE SOLVED: To prevent the increase in fluctuating quantity of air-fuel ratio, minimize the fluctuating width of air-fuel ratio and suppress the generation of surge by gradually minimizing the correction width of feedback correction quantity according to the increase in advance value of valve timing. SOLUTION: This air-fuel ratio control device for internal combustion engine comprises a control means for calculating the feedback correction quantity for correcting a basic control quantity on the basis of the value from an air-fuel ratio detecting means and controlling the actual air-fuel ratio to be close to an intended air-fuel ratio. The control means is additionally provided with a function for gradually minimizing the correction width of feedback correction quantity according to the increase in advance value of valve timing.
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