02-05-2011, 02:08 PM
Presented By
KASHYAP PRAKASH B
[attachment=13240]
Introduction
Most modern cars have disc brakes on the front wheels, and some have disc brakes on all four wheels.
This is the part of the brake system that does the actual work of stopping the car.
The most common type of disc brake on modern cars is the single-piston floating caliper.
Types of disc breaks
Mechanical disc brakes
work on the same principle as rim brake,
The pads bear on the wheel rim. They require relatively frequent adjustment to keep them working effectively.
Hydraulic disc brakes
Single-piston floating caliper.
systems are the most basic, with only one ‘active’ brake pad and one static
Dual-piston floating caliper.
systems equalize the braking forces on both sides of the rotor and are generally much more effective
The main components of a disc brake are:
Front/rear Hydraulic Split
How a disc break works
Bicycle brakes have a caliper, which squeezes the brake pads against the wheel and in turn the brake pads squeeze the rotor and the force is transmitted hydraulically, Friction between the pads and the disc slows the disc down.
TEMPERATURE VARIATION
A quick stop from 60 mph can easily push the rotor temperature up 150 or more degrees.
Several hard stops in quick succession can push brake temperatures into the 600, 700 or even 800 degree range.
Remember, the heavier
the vehicle, the more
heat it creates when
it brakes.
BRAKE FADE
When brake temperatures get too high, the pads and rotors lose their ability to create any additional friction.
As the driver presses harder and harder on the brake pedal, he feels less and less response from his overheated brakes
How to over come brake
Semi-metallic linings can usually take more heat than nonasbestos organic
Vented rotors can dissipate heat more rapidly than nonvented solid rotors. But if the brakes get hot enough, even the best ones will fade.
What is the difference between disc brakes and drum brakes?
First, they dissipate heat better (brakes work by converting motion energy to heat energy).
Under severe usage, such as repeated hard stops or riding the brakes down a long incline, disc brakes take longer to lose effectiveness (a condition known as brake fade).
Disc brakes also perform better in wet weather, because centrifugal force tends to fling water off the brake disc and keep it dry, whereas drum brakes will collect some water on the inside surface where the brake shoes contact the drums.
KASHYAP PRAKASH B
[attachment=13240]
Introduction
Most modern cars have disc brakes on the front wheels, and some have disc brakes on all four wheels.
This is the part of the brake system that does the actual work of stopping the car.
The most common type of disc brake on modern cars is the single-piston floating caliper.
Types of disc breaks
Mechanical disc brakes
work on the same principle as rim brake,
The pads bear on the wheel rim. They require relatively frequent adjustment to keep them working effectively.
Hydraulic disc brakes
Single-piston floating caliper.
systems are the most basic, with only one ‘active’ brake pad and one static
Dual-piston floating caliper.
systems equalize the braking forces on both sides of the rotor and are generally much more effective
The main components of a disc brake are:
Front/rear Hydraulic Split
How a disc break works
Bicycle brakes have a caliper, which squeezes the brake pads against the wheel and in turn the brake pads squeeze the rotor and the force is transmitted hydraulically, Friction between the pads and the disc slows the disc down.
TEMPERATURE VARIATION
A quick stop from 60 mph can easily push the rotor temperature up 150 or more degrees.
Several hard stops in quick succession can push brake temperatures into the 600, 700 or even 800 degree range.
Remember, the heavier
the vehicle, the more
heat it creates when
it brakes.
BRAKE FADE
When brake temperatures get too high, the pads and rotors lose their ability to create any additional friction.
As the driver presses harder and harder on the brake pedal, he feels less and less response from his overheated brakes
How to over come brake
Semi-metallic linings can usually take more heat than nonasbestos organic
Vented rotors can dissipate heat more rapidly than nonvented solid rotors. But if the brakes get hot enough, even the best ones will fade.
What is the difference between disc brakes and drum brakes?
First, they dissipate heat better (brakes work by converting motion energy to heat energy).
Under severe usage, such as repeated hard stops or riding the brakes down a long incline, disc brakes take longer to lose effectiveness (a condition known as brake fade).
Disc brakes also perform better in wet weather, because centrifugal force tends to fling water off the brake disc and keep it dry, whereas drum brakes will collect some water on the inside surface where the brake shoes contact the drums.
