What component generates hydraulic pressure in a brake system?

The master cylinder is the component responsible for generating hydraulic pressure in a brake system. When the driver presses the brake pedal, the master cylinder converts the mechanical force from the pedal into hydraulic force. This is accomplished through the displacement of brake fluid within the master cylinder, creating pressure that is transmitted through the brake lines to the wheel brakes, such as calipers or wheel cylinders.

The master cylinder typically has two chambers to provide redundancy and ensure safety, allowing for effective braking even if one circuit fails. Its central role in the brake system makes it essential for the proper functioning of hydraulic brakes, as it initiates the entire braking process by pushing fluid through the system, enabling clamps or pistons in calipers or wheel cylinders to engage the brake pads or shoes against the rotor or drum.