| 摘要 |
PURPOSE:To maintain the desired car speed in time of going downhill, by releasing car speed control at the time of operating a service brake, during car speed control traveling, and afterward releasing the service brake, while continuing to release the car speed control even if throttle opening is set to being below the setting value. CONSTITUTION:When a car speed control switch 132 is turn to ON, a car speed control mode. Receiving this signal, an output revolving speed setter 140 sets the revolving speed of an output shaft 123 of the stepless transmission 121. And, when throttle opening is below the setting value and the car speed control switch 132 is on, a torque ratio controller 160 controls a torque ratio of the stepless transmission 121 so as to become this setting output shaft revolving speed. And, when during car speed traveling, when a service brake is operated, the car speed control selector 136 releases the car speed control with a signal out of a brake control detector 154, and after wardthe service brake is released and continues to release the car speed control even if the throttle opening is set to being below the setting value. |
