SSANGYONG KYRON 2007.04 Manual page 731

▶ Pressure Decreases in the Circuit
when ABS is Operating
- Even when the hydraulic pressure on each
circuit is stable, the wheel can be locked as
the wheel speed decreases.
This is when the ABS ECU detects the
wheel speed and the vehicle speed and
gives the optimized braking without locking
the wheels. In order to prevent from
hydraulic pressure increases, the inlet valve
is closed and the outlet valve is opened.
Also, the oil is sent to the low pressure
chamber and the wheel speed increases
again. The ABS ECU operates the pump to
circulate the oil in the low pressure chamber
to the master cylinder. This may make the
driver to feel the brake pedal vibration and
some noises.
▶ Pressure Increases in the Circuit
when ABS is Operating
- As the wheel speed increases, the inlet
valve opens and the wheel's pressure
increases due to the
pressure. The oil in the low pressure
chamber circulates to the wheel by the pump
and the wheel speed decreases as the
hydraulic pressure at wheel increases.
This operation continues repetitively until
there are no signs that the ABS ECU is
locking the wheels. When the ABS hydraulic
pressure control takes place, there may be
some vibration and noises at the brake
pedal.
12-49
4890-01
master cylinder
ESP
KYRON 2007.04