| 摘要 |
<p>PURPOSE:To prevent racing of a driving wheel, by deciding the racing through a control unit on the basis of a signal from a rotary speed sensor detecting a speed of the driving wheel and closing in accordance with a condition of the racing a throttle valve through a control of the positive pressure by a solenoid valve. CONSTITUTION:When a vehicle is driven running, an engine 9 equipping a supercharger 1 always detects a rotary speed of a driving and a driven wheel respectively by sensors 30, 31. And when a difference between the rotary speeds by each sensor 30, 31 increases to a preset value or more, a device, deciding the difference as the racing, outputs a signal in accordance with a speed of the racing from a subtraction circuit 33 while a duty signal, increasing its duty value larger as the racing increases larger, from a comparator circuit 35. In this way, a solenoid valve 24 opens applying a positive pressure based from the supercharge pressure to a control chamber 20a of an actuator 20 so as to close a throttle valve 21. Accordingly, the engine, restricting by the throttle valve 21 the suction of air pressurized by a compressor 1a of the supercharger 1 and decreasing an output of the engine, enables the racing to be eliminated.</p> |
