AUTOMATIC TRANSMISSION SYSTEM


  1. CONSTRUCTION


    • Shift solenoid valves SL1, SL2, SL3, SL4, SL5 and SL6 are used for clutch and brake engagement hydraulic pressure control.

    • Shift solenoid valve SLU is used for lock-up clutch hydraulic pressure control.

    • Shift solenoid valve SLT is used for line hydraulic pressure control.

    • Each shift solenoid valve directly controls the clutch and brake engagement hydraulic pressure to reduce the number of valves and shorten the fluid path, improving shift response and reducing shift shock. Also, the valves are designed to support high hydraulic pressures, resulting in fewer friction materials and valves that are lightweight and compact, which contributes to overall transmission weight reduction.

      Figure 1. Shift Solenoid Valve SL1, SL2, SL3, SL4, SL5, SL6

      B00563EE02
      *1 Spool Valve
      *2 Fluid Pressure
      *3 Sleeve
      *4 Current

      Figure 2. Shift Solenoid Valve SLU

      B0056WJE02
      *1 Spool Valve
      *2 Fluid Pressure
      *3 Sleeve
      *4 Current

      Figure 3. Shift Solenoid Valve SLT

      B0056DME01
      *1 Spool Valve
      *2 Fluid Pressure
      *3 Sleeve
      *4 Current

    • Shift solenoid valve SC1 is used to switch the No. 2 B2 apply control valve.

    • Shift solenoid valve SC2 is used to switch the No. 1 D-N-R shift valve.

    • Shift solenoid valve SC3 is used to switch the No. 2 D-N-R shift valve.

    • Shift solenoid valve SL is used to switch the lock-up relay valve.

    • Shift solenoid valve SR is used to switch the sequence valve and No. 1 B2 apply control valve.

      Figure 4. Shift Solenoid Valve SC1, SC2, SC3

      B00567DE01

      Figure 5. Shift Solenoid Valve SL, SR

      B0056ACE01