emergency breaking system in four wheeler

1. Major Assignment (RAC)
Emergency Breaking System in Four Wheeler
CAREER POINT UNIVERSITY
Major Assignment (IC Engine)
Submitted to :-
Mr. Amardeep Kumar
Assistant professor (M.E Det.)
Submitted by :-
Digvijay(k-10620)
B.tech ( M.E)
3rd Year / 6 th Sem

2. Emergency brakes are a secondary braking system installed in motor vehicles. Also known as e-brakes,
hand brakes and parking brakes, emergency brakes are not powered by hydraulics and are independent
of the service brakes used to slow and stop vehicles.
Introduction

3. Principle
Using only levers and cables, each type of emergency brake is completely
mechanical and bypasses the normal brake system. This ensures that a
vehicle can be brought to a complete stop if there's a failure of the brake
system.

4. Working Procedure
• The parking brake or emergency brake is engineered to operate the rear
brakes by way of a series of steel cables that are connected to either a
hand lever or a foot pedal.
• The hand lever or foot pedal is typically manufactured with a ratcheting
action so that the lever or pedal can be partially engaged and locked in
place.

5. Working Procedure(continued..)

6. Uses
Tractors, rough terrain cranes, underground mining, winches, cars etc..

7. Advantage
• Collision avoidance system that would be capable of detecting when a
collision is likely to occur and applying emergency braking to avoid it.
• The most common use of the emergency brake is as a parking brake.
Those who drive manual transmission vehicles, or stick shifts, usually
engage the emergency brake every time they exit the car. If not
engaged, the car might just roll away all on its own.

8. Disadvantage
• There’s a catch to the system:
• In many vehicles, the emergency brake sees little or no use (case in
point, cars and trucks with automatic transmissions). As pointed out,
lack of use causes the cables to corrode. This is particularly common on
the shielded cables where the actual cable mechanism glides through a
tough outer shield. Trapped water, salt and road debris can freeze the
works up solid.
•Use the emergency brake (setting it as a park brake) regularly.

9. Thank you……….