The AWD ECU distributes the driving force to the front/rear
wheel through controlling the multi plate clutch on the AWD transfer
case by analyzing the input information, i.e. the wheel speed,
accelerator and steering angle depending on the road condition and
driving state.
The AWD vehicle has different power transmitting conditions
depending on the driving/road conditions. The vehicle speed is
transmitted through CAN communication from ABS/VDC ECU. The information
from the CAN communication includes the APSwhich indicates the
driver’s intention of acceleration, engine torque, ABS/VDC operation
signal and gear position. The AWD ECU controls the BLDC motor, warning
lamp and indicating lamp and communicates with the tester equipment.
When a vehicle runs at normal speed higher than 60KPH on
regular roads, it is controlled under the 2WD conditions. The ECU
decides the driving force on the front and rear wheel by receiving the
signals from all sensors depending on the driving conditions, i.e.
abrupt starting, turning and driving on the low friction road, and the
optimized torque which is proper to the driving condition is transmitted
to the front wheel through calculating and controlling the transmitted
torque data.
Other information:
Components Location
ITA (Integrated Transfer case Actuator)
The ITA is a unit integrated with the AWD ECU and motor, and
the AWD ECU variably controls the magnitude of the driving force
delivered to the front wheel by determining the driving condition from
the various input signals.
1. ...
Description
The output speed sensor is a vital unit that measures the
rate of rotation of the transmission's turbine shaft and output shaft,
and delivers the readings to the TCM. The sensor provides critical input
data that's used in feedback control, damper clutch control, gear
setting ...