Electric Controlled Coupling

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Fig 1: Electric Controlled Coupling Operation Diagram

Courtesy of NISSAN NORTH AMERICA, INC.

AWD control unit supplies command current to electric controlled coupling (AWD solenoid).
Control clutch is engaged by electromagnet and torque is detected in control clutch.
The cam operates in response to control clutch torque and applies pressure to main clutch.
Main clutch transmits torque to front wheels according to pressing power.

Fig 2: Electric Controlled Coupling Torque Versus Current Graph

Courtesy of NISSAN NORTH AMERICA, INC.