GSF1200AK6/SAK6 (’06-MODEL) 7
ABS CONTROL CYCLE
In order to understand the ABS control cycle, it is necessary to understand the normal control cycle on a
well-gripped road. The ABS control flows at various wheel speeds and brake fluid pressure changes as
shown in the following graph.
A When the brakes are suddenly applied, the brake fluid pressure is maintained in order to determine the
change in wheel speed.
B When the wheel speed keeps decreasing and the wheels are almost locking, the brake fluid pressure is
decreased.
C When the wheel speed increases and prevents the wheels from locking, the brake fluid pressure is main-
tained in order to maintain the braking force.
D When increasing road surface friction forces cause the wheel speed to increase, the brake fluid pressure
is increased gradually.
E When the wheel speed is again decreased, the brake fluid pressure is decreased.
Speed
Brake fluid pressure
Time
Time
Maintaining the brake
fluid pressure
Decreasing
Maintaining
Increasing
stepwise
AlloAllowabable wheel speedle wheel speed
Allowable wheel speed
Wheel speed
ABS operation
First cycle Second cycle
Actual motorcycle speed
ABS control unit-calculated
motor cycle speed
SAMPLE
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