GENERAL INFORMATION
FEATURES
The 4ABS ensures directional stability
and controllability during hard braking.
For vehicles with this type
of ABS, 4 sensors (3 channels) are installed on front and
rear wheels allowing independent left and right control.
The system
has the following features:
- EBD (Electronic Brake-force Distribution system) control has
been added to
provide the ideal braking force for the rear wheels.
- Magnetic encoder for detecting wheel speed has been installed as
a wheel speed sensor
instead of the rotor.
- For wiring harness saving and secure data communication,
CAN bus has
been adopted as a tool of communication with another
ECU.
EBD CONTROL
In ABS, electronic
control is used so the rear wheel brake hydraulic pressure during
braking
is regulated by rear wheel control solenoid valves in accordance with
the vehicle’s
rate of deceleration, and the front and rear wheel slippage which are
calculated from the signals
received from the various wheel speed sensors. EBD control is a control
system which provides
a high level of control for both vehicle braking force and vehicle
stability. The system has
the following features:
- Because the system provides the optimum rear wheel braking force
regardless
of vehicle load conditions and the condition of the road
surface, the system reduces the required
pedal depression force, particularly when the vehicle is heavily
loaded or driven on road surfaces
with high frictional coefficients.
- Because the duty placed on the front brakes is reduced, the
increases in pad temperature
can be controlled during brakes application to improve the wear
resistance characteristics of
the pad.
- Control valves such as the proportioning valve are no
required.
SPECIFICATIONS
Item
|
Specification
|
ABS control
method
|
4-sensor,
3-channel
|
No. of rotor
teeth
|
Front
|
96 (N pole:48 S
pole:48)
|
Rear
|
86 (N pole:43 S
pole:43)
|
Wheel speed
sensor
|
Type
|
Semiconductor
|
CONSTRUCTION
DIAGRAM
