| 摘要 |
PURPOSE:To facilitate clutch operation, by constructing a pneumatic pressure control valve for an air clutch such that an air pressure characteristic for clutch control is obtained at a piston position slidable through hydraulic pressure fed from a clutch master cylinder interlocked with a clutch pedal, thereby making the control valve mountable onto a vehicle having a normal master cylinder. CONSTITUTION:When the hydraulic force functioning onto a piston 72 increases through stepping operation of a clutch pedal 57, energizing force of first rod 75 with respect to a second valve body 63 weakens to lower the pneumatic pressure for an air clutch gradually and an air pressure characteristic proper for control of air clutch can be obtained. Consequently, a pneumatic control valve for air clutch can be mounted as it is onto a vehicle having a normal master cylinder 58 without requiring conventional connection with a clutch pedal 57 through the rod. Furthermore, abrupt connection/disconnection of clutch through slight stroke of clutch pedal 57 can be prevented, resulting in facilitation of clutch operation.
|
