brake master cylinder

The part of the hydraulic brake system which stores the brake fluid. As the brake pedal is applied pressure is forced against a small movable piston in the master cylinder to push hydraulic fluid through the lines to the wheel cylinders and force the brake linings against the drum (in the case of drum brakes) or force the brake pads against the disc (in the case of disc brakes).

Dictionary of automotive terms. 2015.

Look at other dictionaries:

  • Master cylinder — A master cylinder from a Geo Storm. The master cylinder is a control device that converts non hydraulic pressure (commonly from a driver s foot) into hydraulic pressure, in order to move other device(s) which are located at the other end of the… …   Wikipedia

  • master cylinder — The primary component for pressurizing fluid in a hydraulic system. Used in the braking system, it supports a reservoir for holding brake fluid and is activated each time the driver depresses the brake pedal. Also see brake master cylinder dual… …   Dictionary of automotive terms

  • master cylinder — noun a cylinder that contains brake fluid that is compressed by a piston • Syn: ↑brake cylinder, ↑hydraulic brake cylinder • Hypernyms: ↑cylinder, ↑piston chamber • Part Holonyms: ↑hydraulic brake, ↑ …   Useful english dictionary

  • master cylinder — A component of a hydraulic brake system whose piston is moved by the pilot. This pushes the hydraulic fluid into the wheel cylinder, applying the brake …   Aviation dictionary

  • master cylinder — the hydraulic pump of an automotive braking system that contains a cylinder and one or two pistons, is actuated by the brake pedal, and supplies hydraulic fluid under pressure to the brakes at each wheel. * * * …   Universalium

  • tandem master cylinder — A master cylinder with two pistons; when the brake pedal is pressed, the pushrod activates the primary piston which in turn moves the secondary piston; necessary for dual circuit braking systems …   Dictionary of automotive terms

  • cylinder — [1] The round chamber or hole in the cylinder block that houses the pistons and where combustion takes place. Also called bore or barrel. [2] Any tube like device. [3] A device which converts fluid power into linear mechanical force and motion.… …   Dictionary of automotive terms

  • master brake cylinder — See brake master cylinder …   Dictionary of automotive terms

  • master — The primary or controlling device. A secondary or dependent device is called a slave. also See brake master cylinder dual piston master cylinder master link …   Dictionary of automotive terms

  • Brake bleeding — is the procedure performed on hydraulic brake systems whereby the brake lines (the pipes and hoses containing the brake fluid) are purged of any air bubbles. This is necessary because, while the brake fluid is an incompressible liquid, air… …   Wikipedia

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