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Thursday, 9 October 2014

Hydraulic Brakes

Hydraulic Brakes Points : What is Hydraulic Brakes Liquids are virtually incompressible and pressure through out a closed system will be the same. This principle is used to operate the service brakes on most passenger cars. In such a system, the foot pedal is attached to a master cylinder. As the pedal is depressed, it moves a piston with in the master cylinder. The movement of this piston forces the hydraulic fluid through out the system and in to cylinders at each wheel. Here it causes the wheel cylinder pistons to move, which in turn forces the brake shoes against the brake drum. In shows that this instance 800 lbs is applied to a piston area of 0.8 sq. inch, resulting in a pressure of the system of 1000 psi at the rear wheel cylinder produced for each piston making a total of 1400 psi the front wheel being larger, a combined force of 1800 psi is produced.

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