AUTOMATIC TRANSAXLE SYSTEM


  1. CONSTRUCTION


    1. In order to provide a hydraulic pressure that is proportional to the current that flows to the solenoid coil, shift solenoid valves SL1, SL2, SL3, SL4, SL5, SLU and SLT linearly control the line pressure and clutch and brake engagement pressure based on the signals from the ECM.

    2. Shift solenoid valves SL1, SL2, SL3 SL4, and SL5 are high flow linear solenoid valves that can supply more pressure than conventional ones. These shift solenoid valves control engagement elements by directly regulating the line pressure without using a pressure regulation valve (control valve) or a pressure reduction valve (solenoid modulator valve). Thus, the number of valves and the length of the valve body fluid passage have been reduced, the shifting response has been increased and shift shock has been minimized.

      A01R87ZE03
      A01R7RQE02
      Function of Shift Solenoid Valves
      Shift Solenoid Valve Function
      Shift Solenoid Valve SL1 No. 1 clutch (C1) pressure control
      Shift Solenoid Valve SL2 No. 2 clutch (C2) pressure control
      Shift Solenoid Valve SL3

      • No. 3 clutch (C3) pressure control

      • No. 2 brake (B2) pressure control
      Shift Solenoid Valve SL4 No. 4 clutch (C4) pressure control
      Shift Solenoid Valve SL5 No. 1 brake (B1) pressure control
      Shift Solenoid Valve SLT

      • Line pressure control

      • Switches the No. 1 clutch apply rely valve.
      Shift Solenoid Valve SLU

      • Lock-up clutch pressure control

      • Switches the lock-up relay valve.

    3. Shift solenoid valves S1 and S2 are 3-way solenoid valve.

    4. A filter is provided at the tip of the solenoid valve to further improve operational reliability.

      A01R8I2C01
      *1 Strainer - -
      *a Off *b On
      B007WJ2 Drain (Control Pressure) B007WKJ Modulated Pressure
      A01R8GP Control Pressure - -
      Shift Solenoid Valve Type Function
      Shift Solenoid Valve S1 3-way Switches the C3 - B2 apply control valve.
      Shift Solenoid Valve S2 3-way Switches the B2 apply control valve.