mechanical braking system-hydraulic braking system-disc brakes-pneumatic brakes-vaccum brakes-brake efficiency-trouble shooting

1. BRAKING SYSTEM
By R.Vara Prasad
Asst. professor

2. CONTEXT:
 Principle
 Braking Requirements
 Purpose & Location Of Brakes
 Construction
 Method Of Actuation
 Anti-Braking System
 RequirementOf Brake fluid
 Brake Maintenance
 Trouble Shooting

3. PRINCIPLE:
 Brakes are required to stop the vehicle within the smallest possible distance
by converting the kinetic energy into the heat energy which is dissipated
into atmosphere.

4. BRAKING REQUIREMENTS:
 Strong
 Consistent
 Control
 Anti fade
 Effectiveness & Cooling

5. Purpose & Location Of Brakes:
 Service Brakes
 Parking Brakes.
 Transmission
 Wheels

6. CONSTRUCTION:
DRUM BKAKES:
 Attached concentric to axle hub
 Casing is mounted on back plate
 Protects the drum and shoe
assembly
from mud and dust
 It absorb complete torque so
called as
torque plate
 Anchored at one end and force is
applied on other end by actuating
mechanism which forces the brake
shoe against revolving drum thereby
applying the brakes.

7. DISC BRAKES:
 Consists of cast iron disc bolted
to wheel hub & stationary
housing called caliper
 Connected to stationary part
and cast into two parts each
containing piston
 Friction pads are held b/w
piston and disc
 Hydraulically actuated pistons
moves the friction pads into
contact with the disc
 Rubber sealing rings act as
return springs

8. METHOD OF ACTUATION:
 Mechanical brakes
 Hydraulic brakes
 Electric brakes
 Vacuum brakes
 Air brakes

9. VACUUM BRAKES:

10. PNEUMATIC BRAKES:

11. Anti-Braking System:

12. Requirement Of Brake fluid:
• Boiling point
• Viscosity
• Lubrication properties
• Effect on rubber
• Corrosive action
• Storage stability

13. Brake Maintenance:
 Periodic checking
 Topping the level of brake fluid
 Adjustment of brakes to compensate wear of brake lining
 Lubrication
 Changing of rubber cups and seals

14. Trouble Shooting:
• Loss of braking efficiency
• Brake fade
• Brakes binding
• Brakes overheating
• Brake judder
• Vehicle pulling to one side when brakes applied
• Grabbing brakes
• Hand brakes ineffective
• Excessive loss of brake fluid
• Presence of air in the braking system

15. Presented by
1)M. GIRISH
2)V.RAVITEJA