AWD System
The AWD ECU first analyzes sensor signals regarding the AWD wheel speed, accelerator, and steering angle and distributes power to frontal and rear wheels by controlling the multi-layered clutch depending on the road conditions and driving conditions.
- Motor Pump: The AWD ECM controls the AWD system so that it could deliver the rear wheels torque that came from pressing the multi-layered clutch with oil pressure created by rotating the motor pump (actuator) installed in the electric coupling. The torque to the rear wheels varies depending on the amount of pressure to the clutch.
- Pressure Sensor: The AWD ECM controls the motor pump based on the current pressure value it receives from the pressure sensor installed in the coupling. The AWD ECU uses the information to reach the target oil pressure level that is needed to create enough torque to the rear wheels.
- Actuator: The AWD ECM sets target torque according to driving conditions and creates sufficient pressure in line with the target by controlling the operation of a motor pump. When the torque generated by the motor pump is lower or greater than the target value, the AWD ECU determines an error in torque distribution by the multi-layered clutch.