automobile brake system

1. PRESENTED BY-MADHULIKA
SHARMA MONISHA SINGH
B.TECH 3RD YEAR MECHANICAL ENGG. B.TECH 3RD YEAR MECHANICAL ENGG.

2. 1.Introduction
2.What is Anti-Lock Brake System….???
3.Operation Principle
4.Schematic Diagram Of ABS
5.Components Of ABS
6.Working Of ABS
7.Advantages
8.Disadvantages
9.Conclusions
10.Bibliograpy

3. In recent years, with advancement in design &
technology, disc brakes are fast replacing drum brakes.
ABS was firstly developed for aircrafts but now it is
used in cars and trucks to prevent wheels from slipping
and skidding.

4. Anti-lock braking system (ABS) is an automobile
safety system that allows the wheels on
a motor vehicle to maintain tractive contact
with the road surface during braking,
preventing the wheels from locking up and
avoiding uncontrolled skidding.

5. “Limiting the pressure to any wheel which
decelerates too rapidly” is the basic principle
employed in ABS.
A speed sensor is used for measuring the
speed of the wheel and sends it constantly to
the computer.

6.  Speed sensor
 Valve
 Controller
 Pumps

7. The anti-lock braking system needs
some way of knowing when a wheel
is about to lock up. The speed sensors,
which are located at each wheel, or in
some cases in the differential,
provide this information.

8. There is pair of valves having following
functions:-
1. Increasing pressure
2. Holding pressure steady
3. Decreasing pressure

9. When the ABS system operates the brake
Lines lose pressure. The pump
re-pressurizes the system.

10. The controller is an ECU type unit
in the car which receives information
from each individual wheel speed
sensor, in turn if a wheel loses traction
the signal is sent to the controller, the
controller will then limit the brake
force (EBD) and activate the ABS
modulator which actuates the
braking valves on and off.

14.  Stopping on ice.
 Lower insurance costs.
 Higher resale value.
 Traction control.

15.  Inconsistent stop times.
 Expense.
 Delicate systems.

16. Because of its role in preventing the wheels from
locking and better steering control during braking,
Anti‐lock Braking System should be made
mandatory for all vehicles.

17. 1. The journals of Society of Automotive Engineers
India (SAE India).
2. Theory of Machines by R.S.Kurmi.