CVT SYSTEM


  1. CONSTRUCTION


    1. The transmission valve body assembly consists of upper and lower valve bodies and 5 shift solenoid valves.

    2. The 5 shift solenoid valves are installed in the lower valve body for serviceability.

      A00YY9PC01
      *1 Upper Valve Body *2 Lower Valve Body
      *3 Shift Solenoid Valve SL *4 Shift Solenoid Valve DSU
      *5 Shift Solenoid Valve SLS *6 Shift Solenoid Valve DS1
      *7 Shift Solenoid Valve DS2 - -

  2. OPERATION


    1. Belt Clamping Pressure Control Circuit


      1. To ensure the proper control of the belt clamping pressure necessary for transmitting torque, the system controls the hydraulic pressure applied to the secondary pulley. The transmission valve body assembly is provided with a dedicated hydraulic pressure circuit for belt clamping pressure control. This circuit optimally controls the hydraulic pressure applied to the secondary pulley, thus achieving superior torque transmission performance.

        A00YYJFC01
        *1 Primary Regulator Valve *2 No. 2 Line Pressure Modulator Valve
        *3 Shift Solenoid Valve SLS *4 No. 1 Line Pressure Modulator Valve
        *5 Primary Pulley *6 Secondary Pulley
        *7 Oil Pump - -

    2. Pulley Ratio Control Circuit


      1. Pulley ratio control is performed by controlling the inflow and outflow of the CVT fluid to and from the primary pulley. Separate hydraulic circuits are provided for acceleration (fluid inflow) and deceleration (fluid outflow) in order to provide fine-tuned control and a high level of reliability.

        A00YYEZC01
        *1 Oil Pump *2 Shift Solenoid Valve DS1
        *3 Shift Solenoid Valve DS2 *4 No. 1 Ratio Control Valve
        *5 No. 2 Ratio Control Valve *6 Check Valve
        *7 Primary Pulley *8 Secondary Pulley