AWD Center Differential Control

AWD CENTER DIFFERENTIAL CONTROL

Control overview
Connection of multi-plate clutch (LSD) of center differential is controlled according to torque input to the transfer.

1. NORMAL CONTROL
During normal driving, connecting force of multi-plate clutch (LSD) is determined from the calculation results of the following controls:
- Torque sensitive control
Calculates connecting force of LSD according to torque input to the transfer.
- Control for turning
Calculates reduction in connecting force of LSD based on the steering angle and vehicle speed.
This function improves turning performance within the specific vehicle speed range.
- Control for slip
When the front or rear tires begin to slip, calculates the increase in connecting force of LSD according to the amount and time of the slip.
This function maintains road contact, improving drivability.

2. COOPERATION CONTROL
In this control, connecting force of LSD is determined in prior to normal control.
A. Control during ABS operation
During ABS operation, adjusts connecting force of LSD to the specified level. This function improves ABS control.
B. Control during braking
Adjusts connecting force of LSD to the specified level while the brake switch is ON with the throttle valve fully closed. This function improves stability during braking.
C. Control during VDC and TCS operation
During VDC and TCS operation, adjusts connecting force of LSD to the specified level. This function improves VDC and TCS control.
The priority is as follows: A > B > C.