What is the Function of the Brake Master Cylinder?

1 Answers
McHenry
07/30/25 6:11am
The primary function of the brake master cylinder is to convert the mechanical force applied to the brake pedal and the force from the vacuum booster into hydraulic pressure. It then delivers the pressurized brake fluid through the brake lines to the wheel cylinders (slave cylinders) at each wheel, where the wheel brakes transform it into braking force. Additional details about the brake master cylinder are as follows: The brake master cylinder, also known as the hydraulic brake master cylinder, serves as the power source for the service brake system. The braking force originates from the pedal force applied by the driver and the vacuum from the engine intake manifold (vacuum assist), with the vacuum being the primary power source for the master cylinder. There are two types of brake master cylinders: 1. Single-chamber type: Suitable for single-circuit systems; 2. Dual-chamber type: Suitable for dual-circuit systems.
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