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DRIVE-CONTROL COMPONENTS- ABS
ABS HYDRAULIC FUNCTION SCHEMATIC
FWD vehicles. In the case of the AWD vehicles,
The ABS in the AWD models is of two-channel sys-
the rear right and left wheels are subject to Select
tem (two-fluid pressure system).In this system, the
solenoid valves are energized or de-energized so Low control by the Select Low valves. As a result,
the fluid pressure for a total of three wheels (the
that the front and rear wheel brakes on the same
front right wheel and the rear right and left wheels)
side are controlled on the “Select Low” rule.
are under simultaneous control.
For example, when either the front or rear wheel
Select-low: this is a method of providing the same
on the right side is about to be locked, all the solenoid
hydraulic control to both wheels when either wheel
valves on the right side, including those on the front
is about to lock, matching it to the side about to
right wheel, are controlled to hold or slightly reduce
lock, or a method to control by matching pressure
the fluid pressure. In order to prevent one wheel
to the low side.
locking state in the rear wheels, it is necessary
to control the rear wheels by Select Low as in the
-Master cylinder
u
?ed sensor (FL) Wheel speed sensor (FR)
Wheel I ?ed sensor (FL)
Hydraulic Unit (HU)
Hydraulic Unit (HU)
r------------r------------
Front left wheel ilFront right wheel
D
Solenoid Solenoid
valve control valve control
b T
_)I Reservoir J)
Select Low c Select Low
C 7
I
n Wheel speed
i I
1 1 sensor (RR) n
id Rear left wheel U-J Rear right wheel
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