| 摘要 |
PROBLEM TO BE SOLVED: To automatically adapt a concentration control to a quantity actually required by forming a measure quantity against an average deviation of a lambda actual value and increasing a correction quantity in the case where the average lambda actual value is larger than a target value and reducing a correction quantity in the case where it is smaller than the target value. SOLUTION: A load detection means 4 feeds a signal Q regarding an air quantity suctioned by an internal combustion engine to a control device 5. Other sensors 6-8 feed a signal regarding a revolution number n, a temperature T and an exhaust gas compositionλof the internal combustion engine to the control device 5. The control device 5 forms a fuel adjustment signal ti from these signals. A measure quantity from the target value against an average deviation of a lambda actual value is formed at the time of throwing of the lambda control and a correction quantity is increased in the case where the average lambda actual value is larger than the target value. The correction quantity is reduced in the case where the average lambda actual value is smaller than the target value. Thus, an adaptation to an actually required measure quantity of the concentration control can be automatically realized.
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