What is the function of the brake booster?

The function of the brake booster is to amplify the force applied to the brake pedal. This component enhances the driver's ability to exert pressure on the braking system, making it easier to stop the vehicle with less physical effort. The brake booster typically utilizes vacuum pressure from the engine or hydraulic pressure, depending on the type of brake booster, to increase the force applied by the driver's foot.

This amplification is crucial, especially in modern vehicles, as it provides more responsive braking and helps improve overall safety by allowing for quicker and more effective stopping. Without a functioning brake booster, the driver would need to apply significantly more force on the pedal to achieve the same braking power, leading to reduced reaction times and increased stopping distances.