break system
DESCRIPTION
Brake systemTRANSCRIPT
STUDY OF BREAK SYSTEM
PRESENTED BY:DARSHAN SHAH (U12ME153)RAGHAV ASOPA (U12ME154)
MOHIT KULKARNI (U12ME155)
CONTENT• BASICS• BRAKE ACTUATING SYSTEM• TYPES OF BREAKS
• DRUM BRAKES• DISC BRAKES
What is a Brake?
A Brake is a mechanical device which inhibits motion , slowing or stopping a moving object or preventing its motion
How It Works• Brakes converts kinetic energy of the vehicle into heat
energy.• Friction develops heat which absorbs kinetic energy of the
vehicle
Breaking Requirements
• Stop the vehicle within smallest possible distance.
• Act instantaneously in case of an emergency.
• Strong enough to sustain sudden braking force.
• Neither slip nor should cause any skid the vehicle.
• Brake lining should have longer life.
• Operate with the least effort.
It MUST
Types of Brakes and its Classification
I. On the basis of purpose served1. Main (Service or primary) operational brakes2. Parking (or secondary ) brakes
III. On the basis of driver’s Ergonomics1. Foot brakes2. Hand brakes
IV. On the basis of Actuating method1. Mechanical brakes2. Hydraulic brakes3. Pneumatic brakes (a) Compressed air brakes (b) vacuum brakes4. Electric brakes
II. On the basis of location in the vehicle
1. Wheel mounted brakes2. Transmission mounted brakes
Actuating MechanismPurpose• Connects brake pedal with brakes & Increase
small force available at pedal to large force at wheel.
Parts of Actuating Mechanism
• Brake Pedal• Master Cylinder
Break Pedal
Output to master cylinder400 N and 36 mm
100 N and 144 mmDriver Input
4:1 NominalPedal Ratio
Master Cylinder
Master Cylinder
ToFront Brakes
To Rear Brakes
Vacuum Line
PowerBooster
Brake Pedal
Master Cylinder
Purpose Serve by Master Cylinder
1.Hydraulic Pressure required to operate the system is built.2.Due to reservoir provided with it , it serves to maintain a
constant amount of fluid in the system3. It acts as a pump to bleed or force air out of the brake lines
and the wheel cylinder
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DRUM BRAKES• Wheel Cylinder
.Backing Plate
.Secondary Brake Shoe
Upper Return Spring
Parking Brake Lever
Primary Brake Shoe
Piston
Adjuster
Anchor Pin
.Lower Return Spring
Drum Breaks
Drum Break Action
Disc Breaks• Disc brakes use a
rotating disc with two stationary friction pads that are pressed against to rotor by the caliper to create friction and heat.
• Disc brakes are more effective at dissipating heat.
Disc Break Rotor
When the lever is activated, a plunger pushes the fluid through the hoses and into the caliper where the pads are pushed onto the rotor, stopping the Vehicle
Disc Brake pad
• Asbestos• Metallic• Semi-Metallic• Organic