| 摘要 |
PURPOSE:To prevent the breathing or the like of an engine when a vehicle is shifted from decelerating running to accelerating running by a method wherein special relations are provided between the position of idle-up and the set opening degree for switching an idle switch, detecting the opening degree of a throttle, and between the set revolving number of an engine revolution sensor and the revolving number of the engine, increased transiently upon releasing fuel-cut, in the device provided with the functions of the fuel-cut and the idle-up. CONSTITUTION:A fuel-cut valve 2, whose closed position (a) is corresponding to the idle condition of the throttle valve 3, is interposed in the path of a slow system while an idle-up mechanism 4 is annexed to shift the fuel-cut valve 2 to the idle-up position (b). The fuel-cut valve 2 and a valve 9 for the idle-up mechanism 4 are controlled by a control means 11. The control means 11 outputs a fuel-cut signal to the fuel-cut valve 2 and an idle-up signal to the valve 9 only when all of the inputs of the revolution sensor 12, a neutral switch 13, a clutch switch 14 and the idle switch 15 are cut off. Furthermore, the control means 11 precludes the operation of a control means for shifting the closed position of the throttle valve when the vehicle is in an idling condition. |
