CLUTCH MECHANISM OF HYDRAULIC AUTOMATIC TRANSMISSION

摘要

PURPOSE:To provide for higher shift quality and easier shift control by using a mechanism wherein one clutch is released and another is engaged via a one-way clutch, thereby making the clutch mechanism compact. CONSTITUTION:When a pressure oil is supplied into the first hydraulic servo P1 to move the first piston 13 left, the rear end of a retainer 16 presses a facing plate 22 and a disc plate 24 to engage the first multiple disc clutch C1. A one- way clutch F1, at the same time, locks the related motions between a drum 11 and one of counter shaft 4 in one direction. Another pressure oil which is supplied into the second hydraulic servo P2 is further supplied into the first hydraulic servo P1 via a check valve 21 so that the second piston 19 and the first piston 13 are moved left and the second multiple disc clutch C2 and the first multiple disc clutch C1 are engaged individually.