СИСТЕМА CVT


  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.

      A01QFA7C02
      *1 Upper Valve Body *2 Shift Solenoid Valve SLU (for Lock-Up Control)
      *3 Lower Valve Body *4 Shift Solenoid Valve SC (for Clutch Control)
      *5 Shift Solenoid Valve SLP (for Primary Pulley Control) *6 Shift Solenoid Valve SLS (for Secondary Pulley Control)
      *7 Shift Solenoid Valve SL (for Lock-Up Control) - -
      A01QFC2C02
      *1 Transmission Revolution Sensor (NT) *2 Transmission Revolution Sensor (NIN)
      *3 Primary Pulley *4 Secondary Pulley
      *5 Transmission Revolution Sensor (NOUT) *6 Valve Body
      *7 Manual Valve *8 Shift Solenoid Valve SLP (for Primary Pulley Control)
      *9 Shift Solenoid Valve SLS (for Secondary Pulley Control) *10 Shift Solenoid Valve SLU (for Lock-Up Control)
      *11 Shift Solenoid Valve SL (for Lock-Up Control) *12 Shift Solenoid Valve SC (for Clutch Control)
      *13 ECM - -
      *a Pulley Ratio Control *b Belt Clamping Pressure Control
      *c Lock-up Control *d Clutch Pressure Control

  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.

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        *1 Oil Pump *2 Primary Regulator Valve
        *3 Shift Solenoid Valve SLS (for Secondary Pulley Control) *4 Shift Solenoid Valve SLP (for Primary Pulley Control)
        *5 No. 1 Line Pressure Modulator Valve *6 No. 3 Line Pressure Modulator Valve
        *7 Primary Pulley *8 Secondary Pulley

    2. Speed Ratio Control (Shift Control)


      1. Speed ratio control is performed by controlling the hydraulic pressure applied to the primary pulley in order to provide fine-tuned control and a high level of reliability.

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        *1 Oil Pump *2 Primary Regulator Valve
        *3 Shift Solenoid Valve SLS (for Secondary Pulley Control) *4 Shift Solenoid Valve SLP (for Primary Pulley Control)
        *5 No. 1 Line Pressure Modulator Valve *6 No. 3 Line Pressure Modulator Valve
        *7 Primary Pulley *8 Secondary Pulley

    3. Lock Up Control


      1. Lock-up control is performed by controlling the oil pressure of the lock-up clutch. The shift solenoid valve SL and shift solenoid valve SLU are provided to control the lock-up clutch.