JAC T9 - Electronic Brake Force Distribution System (EBD); Traction Control System (TCS); Hill-Start Assist Control (HAC); Hydraulic Brake Assist (HBA)

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Starting and driving
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Electronic brake force
distribution system (EBD)
Traction control system (TCS)
When the vehicle brakes, EBD will
automatically adjust the brake force
distribution ratio of the front and rear
wheels to avoid uneven brake force
distribution of the front and rear wheels,
thus improving braking eciency. EBD
can cooperate with ABS to improve braking
stability and ensure vehicle stability.
TCS monitors the state of each wheel
through the wheel speed signal. Once the
driving wheel slips, it will immediately
intervene the slipping wheel through the
braking system, and also intervene the
engine management system, thus limiting
the slipping of the driving wheel. Under
unfavorable running conditions, TCS can
make the vehicle easier to start, accelerate,
and go uphill.
Hill-start assist control (HAC)
Hill-start Assist Control (HAC) can help
the vehicle to keep braking for several
seconds if the right foot leaves the brake
pedal when the vehicle conduct hill-start
without parking braking so that accidents
caused by vehicle slipping may be avoided
and the driver may calmly operate the
pedal and easily start the vehicle.
The hill-start assist function will be turned
o when any of the following conditions is
met:
1.The hill-start assist function lasts 2s.
2.The driving torque of the vehicle is big
enough to prevent the vehicle from
slipping.
Hydraulic brake assist (HBA)
The Hydraulic Brake Assist (HBA) will
work only if the propulsion system runs.
The Hydraulic Brake Assist (HBA) can
eectively reduce the short braking
distance. Under emergencies, if the driver
quickly steps on the brake pedal, HBA will
immediately increase the brake pressure to
the maximum to eectively activate ABS
and shorten the braking distance.
At this moment, never reduce the force on
the brake pedal. Both leaving the brake
pedal and reducing the force on the brake
pedal will cause the automatic turning o
of the Hydraulic Brake Assist (HBA).
Brake override system (BOS)
The BOS refers to a system that allows
the driver to stop the vehicle by stepping
on the brake pedal when the accelerator
pedal is depressed and the accelerator is
fully opened (that is, the accelerator pedal
is depressed to the bottom), that is to say,
when the BOS detects that the driver fails
to try to brake, it will automatically switch
the engine to the idle state to ensure the
priority of braking.