3. Driving Guide
3.2 Service Electronic Brake System
3.2.1
Anti-lock Braking System (ABS)
Anti-lock braking system (ABS) is an important
part of vehicle active safety system.
When ABS works, the friction between the wheel
and the road belongs to rolling friction and it is
favorable for braking by making use of maximum
adhesion between the wheel and road, thereby
improving the braking deceleration, shortening the
braking distance, and ensuring the direction
stability in the process of vehicle braking.
When ABS works, it is equivalent to snubbing at
high frequency. The driver will feel the vibration of
brake pedal accompanied by the “tick” sound
produced by brake master cylinder operation
when depressing the brake pedal in case of
emergency. At this point, the ABS is in normal
working state. Since the brake master cylinder
adjusts the brake pressure constantly, a force will
be fed back to the brake pedal continuously.
Therefore, in this case, it is required to depress
the brake pedal to the end, and it is forbidden to
depress the brake pedal repeatedly.
As ABS is only the safety assistant system, its
function is very limited. For example, when
making a brake on sand and stone road or snowy
road, it may have a longer braking distance
compared with braking on concrete road or dry
road. It shall not consider that ABS can achieve
the ideal braking performance in any situation.
Therefore, don not rely on these systems too
much. Only safe driving is the most important.
Under the following conditions, light depress the
brake pedal to activate ABS. It is normal to feel
vibration:
●
When shifting gears.
●
During emergency braking.
●
When turning at high speed.
●
When driving on slippery road.
●
When driving on projected or pit road.
●
When making sudden start after the vehicle
is started.
223