| 摘要 |
PURPOSE:To improve operation performance by learning the learning correction value at first then learning the learning correction coefficient, thus properly carrying-out learning, when the learning correction amount and the learning correction coefficient are learned, when the learning conditions in the air-fuel ratio feedback control are established. CONSTITUTION:When an engine is in operation, the fundamental injection time TP is determined by a control circuit 44 on the basis of the output signals of a suction pressure sensor 22 and a revolution-angle sensor 42. When the learning conditions are established in the air-fuel ratio feedback control, the learning correction value TAUG for eliminating the deflection of the air-fuel ratio in idle operation and the learning correction coefficient KG for eliminating the deflection of the air-fuel ratio in the case when a load is applied are learned, and the fundamental injection time TP is corrected by using the above-described data TAUG and KG at least in the transition to the open-loop control. In this case, the learning correction value TAUG is learned at first, and after this learning is completed, the correction coefficient KG is learned, and thus always correct learning is carried-out.
|
