AUTOMATIC TRANSAXLE SYSTEM


  1. CONSTRUCTION


    1. Shift Solenoid Valves SL1, SL2, SL3, SL4, SL5, SL6, SLU and SLT


      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, SL6, 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, SL5, and SL6 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.

        A0025Q5E04
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        Function of Shift Solenoid Valves
        Shift Solenoid Valve Function
        Shift Solenoid Valve SL1 Controls the No. 1 clutch (C1) pressure.
        Shift Solenoid Valve SL2 Controls the No. 2 clutch (C2) pressure.
        Shift Solenoid Valve SL3 Controls the No. 3 clutch (C3) pressure.
        Shift Solenoid Valve SL4 Controls the No. 4 clutch (C4) pressure.
        Shift Solenoid Valve SL5 Controls the No. 1 brake (B1) pressure.
        Shift Solenoid Valve SL6 Controls the No. 2 brake (B2) pressure.
        Shift Solenoid Valve SLT

        • Controls line pressure.

        • Switches the sequence valve.
        Shift Solenoid Valve SLU

        • Controls the lock-up clutch pressure.

        • Switches the pressure relay valve.

    2. Shift Solenoid Valve SL


      1. Shift solenoid valve SL is a 3-way solenoid valve.

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

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        Shift Solenoid Valve Type Function
        Shift Solenoid Valve SL 3-way Switches the lock-up relay valve.