FOUR WHEEL DRIVE CONTROL SYSTEM


  1. CONSTRUCTION


    1. The center differential uses a TORSEN* LSD. Also, a mechanism is used to switch the center differential between free and lock.

    2. The TORSEN* LSD is a torque-sensing LSD. It generates a limited-differential torque in proportion to the drive torque, and instantly changes the front and rear torque distribution.

      Tech Tips

      *: TORSEN is a registered trademark of JTEKT Corporation.

    3. The torque distribution during straightline driving is 40/60 (front/rear), which is helpful for an appropriate steering response during the initial stage of a turn. During the acceleration stage of a turn, the torque distribution increases in the rear wheels.

    4. This center differential consists of a center differential case, sun gear, ring gear, coupling, 8 pinion gears, clutch plates, and planetary carrier.

    5. The drive torque is input to the center differential case.

    6. The center differential case is connected with the planetary carrier.

    7. The sun gear is connected to the front driver sprocket (in the front wheel output side) through the transfer clutch hub and transfer front drive spline piece.

    8. The ring gear is connected to the transfer rear output shaft (in the rear wheel output side) through the coupling.

      A019QY9C01
      *1 Center Differential Case *2 Ring Gear
      *3 Pinion Gear *4 Front Drive Clutch Sleeve
      *5 Planetary Carrier *6 Front Drive Sprocket
      *7 Transfer Front Drive Spline Piece *8 No. 4 Clutch Plate
      *9 Transfer Clutch Hub *10 No. 3 Clutch Plate
      *11 No. 2 Clutch Plate *12 Coupling
      *13 Sun Gear *14 Transfer Rear Output Shaft
      *15 No. 1 Clutch Plate - -

    9. The center differential is switched between free and lock in accordance with the movement of the front drive clutch sleeve.