| 摘要 |
PROBLEM TO BE SOLVED: To prevent erroneous learning when performing an air-fuel ratio feedback control according to a change of an operating mode such as opening/ closing timing of an intake valve and an exhaust valve and lift amount, etc., regarding an air-fuel ratio control device for an internal combustion engine. SOLUTION: When a target operating mode of the intake valve or the exhaust valve is changed (step S20), when a deviation of the target operating mode and an actual operating mode exceeds prescribed amount (step S30) and when the actual operating mode is changed (step S40), air-fuel ratio learning is inhibited when performing the air-fuel ratio feedback control (step S70). |
