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Home >> Infiniti >> 2013 >> QX56 AWD >> Repair and Diagnosis >> Transmission >> Transfer Case >> System Description >> Structure And Operation >> Torque Split Mechanism >> Operation Principle >> Auto, 4H Mode
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Auto, 4H Mode

Fig 1: Transfer Case Operation Principle Diagram (Auto, 4H Mode)
G08855469Courtesy of NISSAN NORTH AMERICA, INC.
  1. Transfer control unit supplies command current to transfer motor.
  2. Transfer motor operates and actuator shaft rotates clockwise.
  3. Shift fork operates according to rotation of actuator shaft. Sun gear and Hi-Lo sleeve are engaged.
  4. Ball ramp lever operates in axial direction via cam fixed on actuator shaft according to traction torque of transfer motor, presses piston, and thrusts multiple plate clutch.
  5. Torque is transmitted to front wheels according to thrusting pressure of multiple plate clutch.
    NOTE: Torque transmitted to the front wheel is determined according to the command current.
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