What’s inside a brake booster?
What’s inside a brake booster?
A brake booster, typically found in modern vehicles, is a device that amplifies the force applied to the brake pedal, making it easier to stop the car. Inside, it contains a diaphragm that separates the chamber into two sections, a vacuum system (often from the engine), and a mechanism to transfer the amplified force to the master cylinder.
Here’s a breakdown of the components and how they work:
Key Components:
- Diaphragm:A flexible, rubber or plastic disc that divides the booster into two chambers.
- Vacuum System:Utilizes engine vacuum to create a pressure difference across the diaphragm.
- Control Valve:Regulates the airflow into the booster, controlling the pressure differential.
- Push Rod:Connects the brake pedal to the master cylinder, transferring the amplified force.
- Springs:Return the diaphragm and related parts to their original position when the brake pedal is released.
- Seals and Gaskets:Maintain the airtight seal within the booster.
How it Works:
- ۱٫ Engine Vacuum:When the engine is running, it creates a vacuum in the intake manifold, which is connected to the brake booster.
- ۲٫ Brake Pedal Input:When the driver presses the brake pedal, a linkage pushes a valve inside the booster.
- ۳٫ Pressure Differential:This valve opens, allowing air to enter one side of the diaphragm, creating a pressure difference.
- ۴٫ Amplified Force:The pressure difference pushes the diaphragm, which in turn pushes the push rod.
- ۵٫ Master Cylinder Activation:The push rod then applies force to the master cylinder, which pressurizes the brake fluid and activates the brakes.
- ۶٫ Return:When the brake pedal is released, the control valve closes, and the spring returns the diaphragm and related parts to their original position.
What is water ring vacuum pump?
What is an electric vacuum pump?
How does a brake booster work?
What’s inside a brake booster?
