System that allows the wheels to continue interacting tractively with the road surface while braking and avoid skidding.

2. Anti-Lock Breaking System
► Introduction
► Components
► Working
► Why do we need this?
► Road surfaces and ABS
► How to use ABS?
► Technical Point of View
► Conclusion
► References

3. ► System that allows the wheels to continue interacting
tractively with the road surface while braking and
avoid skidding.
► Help the driver maintains some steering ability and
avoid skidding while braking.
► Promotes directional stability and allows steering
while maximizing braking.
► Four-wheel ABS prevents all wheels from skidding,
it allows to steer the vehicle and still maintain
braking.

4. ► Speed sensors - provide this information when a
wheel is about to lock up.
► Valves - in the brake line of each brake controlled by
the ABS ; three positions of valve.
► Pump - used to put that pressure back.
► Controller - ECU type unit in the car which receives
information from each individual wheel speed
sensor.

5. ► Abs uses wheel speed sensors to determine if one or
more wheels are trying to lock up during braking. If
a wheel tries to lock up, a series of hydraulic valves
limit or reduce the braking on that wheel. This
prevents skidding and allows you to maintain
steering control.
► It reduces the pressure to that brake until it sees an
acceleration.
► Pulse in the brake pedal.

6. Two significant advantages:
► It reduces the need for driver skill during panic
situations.
► Allows the driver to steer while braking at the limit.

7. ► Road hazards that will cause ABS to function
unexpectedly are
gravel, sand, ice, snow, mud, railway
racks, potholes, manhole covers and even road
markings when it is raining.

8. ► Apply steady and constant pressure- don't take your
foot off the brake pedal until the vehicle is stopped
and don't pump the brake.

9. ► Two ways in which a vehicle typically loses control
when cornering:
► Under-steer and Over-steer.
► Under-steer: occurs when the front wheels of a
vehicle lose traction in a turn. It feels as though
the car is going straight rather than in the
direction of the turn.
► Over-steer: occurs when the rear wheels lose
traction and the rear of the vehicle begins to
swing out, potentially causing a vehicle to spin or
slide sideways.

10. ► With such sophisticated technology which has made
driving simpler than ever before, there is an immense
demand for these systems becoming more and more
common in the vehicles to come in future.

11. ► www.autoeducation.com "BRAKES"
► www.a-car.com " NEW TECHNOLOGY