| 摘要 |
<p>1,214,280. Clutch control. TWIN DISC Inc. 21 April, 1969 [2 May, 1968], No. 20167/69. Heading F2L. In a transmission system for a motor vehicle wherein an engine E drives an output shaft 15 through an hydraulically operated continuously slipping friction clutch 18, a torque converter TC and a change speed gear GB, a governor G driven by a torque converter output shaft 13 automatically regulates a control pressure 11 supplied to the clutch 18 and thus varies the clutch slip to maintain the torque converter output speed constant. The clutch 18 may be of the type described in Specification 1,146,236 wherein for a predetermined control pressure 11 the clutch output speed is maintained constant by a valve D1 which varies the pressure supplied through a line 23 to the clutch engaging servo 17 in response to centrifugal force that opposes the control pressure 11. A variation in the control pressure 11 adjusts the output speed of the clutch 18 which automatically maintains its output speed proportional to the control pressure 11. An hydraulic accumulator 30 is connected to the control pressure line 11 to prevent hunting. As shown the governor G meters pressure fluid from a pump P to the line 11 at a pressure proportional to the torque converter output speed. In Fig. 2 (not shown), the governor G actuates a valve which meters pressure liquid from a supply line 14 to the clutch control line 11. The clutch 18 may alternatively be of the type described in Specification 1,149,573 which automatically maintains the clutch output torque proportional to the control pressure.</p> |
