SSANGYONG KYRON 2007.04 Manual page 722

12-40
4890-01
10. HYDRAULIC CIRCUIT OF HBA
(HYDRAULIC BRAKE ASSIST)
The above figure shows one front and one rear wheel and the same hydraulic circuit forms as
in the ESP operation.
When HECU recognizes that it is an emergency and it is required for hard braking, depending
on the pressure value of the brake pressure sensor and pressure changes caused by the
pressure sensor timing, it operates the pump immediately to apply the brake pressure at the
wheels. Then, the pressure in the pump increases until just before the corresponding wheel
gets locked. The motor still keeps rotating and the outlet valve and the separation valve are will
stay closed.
When the wheel starts to lock, the HBA function cancels and switches to ABS operation.
ESP
KYRON 2007.04