| 摘要 |
PURPOSE:To prevent an engine from stalling by progressively increasing fuel supply amount and advancing angle in resumption of fuel supply while clearing fuel reduction and delay angle amount immediately when the degree of reducing rotation is large in disengagement of a transmission. CONSTITUTION:An electronic control unit 11 compares rotational speed N of an engine with rotational speed NA in resumption of fuel supply, and when N<=NA, processes the resumption of fuel supply to increase progressively a predetermined value b as an initial value for reducing fuel amount at every predetermined rotational frequency to return fuel injection to a normal one. In this case, since the rotational speed N is dropped by turning off a clutch to bring about engine stall, when reduced rotational frequency DELTAN is larger than a predetermined value a, reduced fuel amount in the fuel return is cleared to recover a basic injection time for preventing the stall. Also, to reduce shock in the return of fuel supply, angle may be advanced progressively after once it is delayed. In this case also the angle delaying is interrupted immediately when DELTAN>a to recover the basic ignition timing. |
