| 摘要 |
PURPOSE:To control the variation of gain of the whole of a constant speed running system irrespective of a running state, by correcting a vehicular gain varying according to the running state by providing each of detecting devices detecting a high and low openings of a throttle valve. CONSTITUTION:In case of running on a flat road at a common speed region, a high and low opening switches 104, 108 are turned OFF and, for example, when a speed-up signal 1a is given from a control circuit 1, the signal 1a is applied to a D.C. motor 2, a resistor 103, a diode 106 and the control circuit 1 in order of the foregoing and a sector 5 is revolved by a revolution of the D.C. motor 2 through a speed reduction mechanism 3, through which speed-up operation of a throttle valve 8 is performed. On the one hand, at the time of high (low) load running on an acclivity(declivity), the high (low) opening switch 104 (108) is turned ON by a protrusion of a switch operating plate 109. With this construction, an acceleration side gain of a vehicle is corrected by applying the speed-up signal 1a to the D.C. motor 2, the high opening switch 104, the diode 106 and the control circuit 1 in order of the foregoing at the time of the high load running. |
