| 摘要 |
PURPOSE:To increase the ratio with which a compressor is turned OFF at the time of acceleration and accelerate the compressor smoothly by a method wherein the operatig ratio of the compressor at the time of acceleration is reduced as compared to those at the times of deceleration and constant-speed running. CONSTITUTION:An output from an operational amplifier 15 becomes L-level according as an output from an acceleration detecting circuit 16 becomes higher than a reference voltage from a connecting point for resistances 18, 19. As a result, an analog switch 4 is turned ON. When the automobile is decelerated or enters constant-speed running and the output from the circuit 16 becomes lower than the voltage at the connecting point for the reistances 18, 19, the output becomes L-level and the switch 4 is turned OFF. Namely, in the case of an accelerating condition, a feedback voltage becomes higher because a resistance 3 is connected to a resistance 2, and in the case of deceleration or constant-speed running, the resistance 3 is removed and the feedback voltage becomes low. Accordingly, a differential with reference to the amplifier 1 is controlled. |
