RSS Feed
Twitter
Monday, February 04, 2013
Unknown
Seminar On Hydraulic and Pneumatic Braking System
This system uses a brake fluid (Preferably ethylene glycol) to transfer the pressure applied
by the operator from the controlling unit to the actual brake mechanism, which is usually at or
near the wheel of the vehicle.Most vehicles in India prefer to have drum brakes on rear wheels while disk brakes on the front wheels attached to the hydraulic controlling unit.
At one time,the passenger vehicles commonly employed drum brakes on all four wheels. Later, disc brakes were used for the front and drum brakes for the rear. However, because disc brakes have shown better heat dissipation and greater resistance to 'fading' and are therefore generally safer than drum brakes, four-wheel disc brakes have become increasingly popular, replacing drums on all but the most basic vehicles. Many two-wheel vehicles designs, however, continue to employ a drum brake for the rear wheel.
For simplicity, the braking system described hereafter uses the terminology and configuration for a simple disc brake.
Within a hydraulic brake system, as the brake pedal is pressed, a pushrod exerts force on the piston(s) in the master cylinder causing fluid from the brake fluid reservoir to flow into a pressure chamber through a compensating port which results in an increase in the pressure of the entire hydraulic system. This forces fluid through the hydraulic lines toward one or more calipers where it acts upon one or two caliper pistons sealed by one or more seated O-rings which prevent the escape of any fluid from around the piston.
The brake caliper pistons then apply force to the brake pads. This causes them to be pushed against the spinning rotor, and the friction between the pads and the rotor causes a braking torque to be generated, slowing the vehicle. Heat generated from this friction is either dissipated through vents and channels in the rotor or conducted through the pads themselves which are made of specialized heat-tolerant materials such as kevlar or sintered glass.
Subsequent release of the brake pedal/ lever allows spring(s) to return the master piston(s) back into position. This relieves the hydraulic pressure on the caliper allowing the brake piston in the caliper assembly to slide back into its housing and the brake pads to release the rotor. The hydraulic braking system is designed as a closed system: unless there is a leak within the system, none of the brake fluid enters or leaves it, nor does it get consumed through use.
Key:
Seminar report and ppt download,Hydraulic braking system seminar report,Pneumatic braking system seminar report,braking system in vehicle,Seminars on Automobile,Seminar report and power point presentation free download.Automobile braking system,Mechanical engineering seminar and ppt
This system uses a brake fluid (Preferably ethylene glycol) to transfer the pressure applied
by the operator from the controlling unit to the actual brake mechanism, which is usually at or
near the wheel of the vehicle.Most vehicles in India prefer to have drum brakes on rear wheels while disk brakes on the front wheels attached to the hydraulic controlling unit.
At one time,the passenger vehicles commonly employed drum brakes on all four wheels. Later, disc brakes were used for the front and drum brakes for the rear. However, because disc brakes have shown better heat dissipation and greater resistance to 'fading' and are therefore generally safer than drum brakes, four-wheel disc brakes have become increasingly popular, replacing drums on all but the most basic vehicles. Many two-wheel vehicles designs, however, continue to employ a drum brake for the rear wheel.
For simplicity, the braking system described hereafter uses the terminology and configuration for a simple disc brake.
Within a hydraulic brake system, as the brake pedal is pressed, a pushrod exerts force on the piston(s) in the master cylinder causing fluid from the brake fluid reservoir to flow into a pressure chamber through a compensating port which results in an increase in the pressure of the entire hydraulic system. This forces fluid through the hydraulic lines toward one or more calipers where it acts upon one or two caliper pistons sealed by one or more seated O-rings which prevent the escape of any fluid from around the piston.
The brake caliper pistons then apply force to the brake pads. This causes them to be pushed against the spinning rotor, and the friction between the pads and the rotor causes a braking torque to be generated, slowing the vehicle. Heat generated from this friction is either dissipated through vents and channels in the rotor or conducted through the pads themselves which are made of specialized heat-tolerant materials such as kevlar or sintered glass.
Subsequent release of the brake pedal/ lever allows spring(s) to return the master piston(s) back into position. This relieves the hydraulic pressure on the caliper allowing the brake piston in the caliper assembly to slide back into its housing and the brake pads to release the rotor. The hydraulic braking system is designed as a closed system: unless there is a leak within the system, none of the brake fluid enters or leaves it, nor does it get consumed through use.
Key:
Seminar report and ppt download,Hydraulic braking system seminar report,Pneumatic braking system seminar report,braking system in vehicle,Seminars on Automobile,Seminar report and power point presentation free download.Automobile braking system,Mechanical engineering seminar and ppt
Posted in 
