BRAKING
SYSTEM
The vehicle brake used to slow down a vehicle by converting
its Kinetic Energy into Heat energy.
It basically inhibits motion, slowing down or stopping a
moving object or preventing its motion.
REQUIREMENTS
OF A BRAKING SYSTEM
Stops
the vehicle within smallest possible distance.
Acts
instantaneously in case of an emergency.
Strong
enough to sustain sudden braking force.
Neither
slips nor should cause any skid the vehicle.
Operates
with the least effort.
TYPES OF BRAKES
MECHANICAL BRAKES
HYDRAULIC RAKES
PNEUMATIC BRAKES
ELECTRIC BRAKES
HYDRAULIC
BRAKES
Hydraulic brakes are actuated by the hydraulic pressure
(pressure of a fluid). It is commonly used in the automobiles.
WORKING PRINCIPLE : Hydraulic brakes work on the principle
of Pascal’s law.
PASCALS LAW :
“Pressure at a point in a fluid is equal in all directions
in space”.
DISC
BRAKE
The disc brake is a wheel brake which slows rotation of the
wheel by the friction caused by pushing brake pads against a brake disc with a
set of callipers.
DRUM BRAKE
A drum brake is a brake that uses friction caused by a set
of shoes or pads that press against a rotating drum-shaped part called a brake
drum. The term drum brake usually means a brake in which shoes press on the
inner surface of the drum.
ADVANTAGES
OF DISC BRAKE OVER DRUM BRAKE
Lighter
in weight .
Better
performance in wet conditions.
Less
prone to brake fade due to better heat
dissipation. Brake ducts may be installed to improve heat dissipation
further.
It also has the advantage of being self
adjusting.
It is more efficient.
ANTILOCK
BRAKING SYSTEM (ABS)
ABS addresses two conditions related to brake application,
wheel lockup and vehicle directional control. Without ABS when brakes are
applied with enough force to lock the wheels, the vehicle may slide
uncontrollably. ABS Systems use speed sensors at the wheels. The speed sensors
are monitored by ECU.
