Hydraulic Brake System full report

[seminar class]

Presented by:
AMIT KUMAR

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HYDRAULIC BRAKING SYSTEM
The need for better fuel economy, simplified system assembly, more environmentally friendly systems, ease of vehicle maneuverability, and improved safety systems has resulted in new types of braking systems. The centerpiece of the current braking systems is a hydraulic assembly under the hood of the vehicle that brings together the wheel pressure modulators and pressure reservoir . interaction of mechanics and electronics is key to the success of the braking system. The microcomputer, software, sensors, valves, and electric pump work together to form the basis of the system.
Introduction
BRAKING SYSTEM
TYPES OF BRAKES
HYDRAULIC BRAKE
PRINCIPLE OF HYDRAULIC BRAKE
PASCAL'S LAW
Pascal's law states that if the pressure is applied at any point in an incompressible liquid it is transmitted undiminished to all other parts in the liquid.
In the figure the piston covers a fluid of density r and the atmospheric pressure over the piston is P0. Then pressure at height ‘h’ below.
P = P0 + h g …. (i)
Now if the outside pressure is increased by DP, then
P’ = P0 + P + h g ….(ii)
This implies that increase of pressure at top reaches undiminished every where.
LAY OUT OF HYDRAULIC BRAKE
PASCAL LAW
(i) Hydraulic press: p = f/a = F/A or F = A/a × f
This can be used to lift a heavy load placed on the platform of larger piston or to press the things placed between the piston and the heavy platform. ii) Hydraulic Brake: Hydraulic brake system is used in auto-mobiles to retard the motion. The principle of hydraulic brake is same as that of the hydraulic lift.
PARTS OF HYDRAULIC BRAKE
 BRAKE PEDAL
 PUSH ROD
 MASTER CYLINDER
 WHEEL CYLINDER
Hydraulic Brake Control Valves
Brake hydraulic systems need various type of control devices
Braking performance must be even and consistent
Combination disc/drum systems require different type of valves
• Shorter stopping distances and optimized stability
• More comfort and safety due to adjustable pedals
• No pedal vibration in ABS mode
• Virtually silent
• Environmentally friendly with no brake fluid
• Improved crash worthiness
• Saves space and uses fewer parts
• Simple assembly
• Capable of realizing all the required braking and stability functions, such as ABS, EBD, TCS, ESP, BA, ACC, etc.
• Can easily be networked with future traffic management systems .
Advantages of the Hydraulic
Brake :