| 摘要 |
PURPOSE:To automatically prevent increase of a car speed and ensure safety of running operation, by automatically operating a brake device through a brake device actuator system if the car speed exceeds a preset value and providing said brake device actuator system in an actuator system of the brake device operated through a brake pedal. CONSTITUTION:An air tank 42 is connected to a booster 24 through two passages 38, 40, double checker 36 and passage 35. A selector valve device 48, operated by a brake pedal 46, is interposed in the passage 38. On the other hand, a presssure reducing valve 53 and solenoid selector valve 52 are interposed in series in the passage 40. The solenoid selector valve 52 is connected to a comparator circuit 58 through a position detector switch 62 of an accelerator pedal. The comparator circuit 58 compares output of a speed ddtector sensor 54 of a driving shaft 6 with output of a car speed setting control device 56, provided in a driven's seat, if the former is larger than the latter, an output signal is generated. Then the comparator circuit 58 can be operated by an operating switch 60. |
