Question

explain the working of hydraulic brakes

Answer 1

The most common arrangement of hydraulic brakes for passenger vehicles, motorcycles, scooters, and mopeds, consists of the following:Brake pedal or leverA pushrod (also called an actuating rod)A master cylinder assembly containing a piston assembly (made up of either one or two pistons, a return spring, a series of gaskets/ O-rings and a fluid reservoir)Reinforced hydraulic linesBrake caliper assembly usually consisting of one or two hollow aluminum or chrome-plated steel pistons (called caliper pistons), a set of thermally conductive brake pads and a rotor (also called a brake disc) or drum attached to an axle.       The fluid is pressurised to stop the wheel disc from rotating.

Answer 2

$\fbox {working \: of \: hydraulic \: brakes - }$

To apply brakes, the foot pedal is pressed due to which pressure is exerted on the liquid in the master cylinder P, so liquid runs out from the master cylinder P to the wheel cylinder Q. As a result, the pressure is equally transmitted and undiminished through the liquid to the Pistons B1 and B2 of the wheel cylinder because of which both Pistons get pushed outwards and brake shoes gets pressed against the rim of the wheel due to which the motion of the wheel retards.

As the pressure is transmitted through the liquid, equal pressure is exerted on all the wheels of the vehicle that are connected to the pipeline R. When the pressure on the pedals is released, the liquid runs back from the wheel cylinder Q to the master cylinder P and the spring pulls the brake shoes to their original position and compels the Pistons B1 and B2 to return back into the wheel cylinder Q. Hence, brakes are released.