| 摘要 |
PURPOSE:To keep the air-fuel ratio of an engine constant even in its transient state, by controlling the injected quantity of fuel depending on the average of both a basic fuel injection quantity determined last time and that determined this time. CONSTITUTION:In a step 112, a basic fuel injection quantity TP is determined depending on the intake negative pressure PM of an engine and its rotational frequency. In a step 114, it is judged whether an idling contact LL is on. Unless the engine is idling, a step 116 is taken so that a basic fuel injection quantity TP+K(TP-TPo) where TPo denotes that determined last time is used. If the engine is idling, a step 118 is taken so that the basic fuel injection quantity TP determined this time is used. The air-fuel ratio of the engine is thus kept constant even in its transient state. |
