AUTOMATIC TRANSMISSION SYSTEM



    • The clutch engagement force during shift transmission is affected by the centrifugal fluid pressure that acts on the fluid inside the piston fluid pressure chamber (referred to as"chamber A"), in addition to the original clutch pressure regulated by the valve body. In order to eliminate the influence caused by the centrifugal fluid pressure, the canceling fluid pressure chamber (referred to as "chamber" ) is provided on the opposite side of chamber A to cancel out the centrifugal fluid pressure. As a result, the centrifugal fluid pressure canceling mechanism provides responsive, smooth shift transmission.

      A01F6CGC03
      *1 Piston *2 No. 4 Clutch (C4)
      *3 No. 3 Clutch (C3) *4 No. 1 Brake
      *a Chamber A *b Chamber B

  1. OPERATION


    • Chamber B is filled by fluid supplied to the shaft for lubrication. As a result of filling chamber B, the same amount of fluid pressure is present on both sides of the piston due to centrifugal force. This cancels the effects of fluid pressure on the piston caused by centrifugal force. Accordingly, it is not necessary to discharge the fluid through the use of a check ball, and highly responsive and smooth shifting characteristics are achieved.

      A01F66NE15