DYNAMIC TORQUE CONTROL AWD SYSTEM


  1. CONSTRUCTION


    1. The electromagnetic control coupling consists of a front housing, main clutch, electromagnetic solenoid, armature, control clutch, cam, piston and shaft.

    2. The outer sides of the main clutch and control clutch are coupled to the front housing. The inner side of the main clutch is coupled to the shaft, and the inner side of the control clutch is coupled to the cam.

    3. The control clutch is a multiple metal plate type, and the main clutch is a multiple wet plate type.

      Tech Tips

      The electromagnetic control coupling cannot be disassembled. For replacement, replace the electromagnetic control coupling assembly. For details, refer to the Repair Manual.

      A01R7YTC01
      *1 Main Clutch *2 Front Housing
      *3 Shaft *4 Piston
      *5 Armature *6 Cam
      *7 Electromagnetic Solenoid *8 Control Clutch
      *a Construction of Electromagnetic Control Coupling - -
      B007WKJ Propeller Shaft Assembly Side - -

  2. OPERATION


    1. The drive force is transmitted from the propeller shaft to the front housing.

    2. The 4WD ECU assembly judges whether it is necessary to send drive torque to the rear wheels based on input from various sensors. When it is necessary to send drive torque to the rear wheels, the electromagnetic solenoid is operated.

    3. The electromagnetic solenoid attracts the armature to the control clutch side. This causes the control clutch to engage and the cam to rotate.

    4. The rotational movement of the cam causes the piston to push on the main clutch, causing the main clutch to engage.

      A01R7MBC01
      *1 Electromagnetic Solenoid *2 Control Clutch
      *3 Armature *4 Main Clutch
      *5 Shaft *6 Front Housing
      *7 4WD ECU Assembly *8 Piston
      *9 Cam - -
      *a From Propeller Shaft Assembly *b Not Operating
      *c Operating - -

    5. The amount of drive force that is transmitted to the rear wheels is controlled steplessly by controlling the amperage that is applied to the electromagnetic solenoid.

    6. Accordingly, drive force from the propeller shaft is transmitted to the rear wheels.

      A01R821C01
      *1 4WD ECU Assembly - -
      *a Control Clutch Engagement Force: Small *b Control Clutch Engagement Force: Large
      *c Piston Travel Distance *d Low Amperage
      *e High Amperage - -