| 摘要 |
PURPOSE:To improve both the steerability and the turning characteristics by providing a pressure regulating device which regulates pressure by an operating means, in a pressure oil discharging passage so as to enable individual setting of clutch engaging/disengaging pressure and brake pressing force. CONSTITUTION:Hydraulic cylinders 13 and 14 manage the sequential operations of the disengagement of clutches 3b and 5a and the supply of oil pressure to brakes 4b and 5b. A pressure regulating device regulates pressure in an pressure oil discharging passage after the clutch engaging stroke of the pistons in the hydraulic cylinders 13 and 14 is changed over to the clutch disengaging stroke thereof. A solenoid valve 17 is opened by the operation of an operating means to feed pressure oil into the hydraulic cylinder 13 (14), whereby disengaging the clutches. And then, pressure oil inside both the hydraulic cylinder 13 (14) is discharged from pressure oil outlet 43 (44) to press the brakes under the control of a relief valve 23. Braking force can be therefore regulated independently of clutch engaging/disengaging pressure. |
