Liquid brakes in automobiles follow the principle of brahma press (Pascal’s principle). What about air brakes? Collect the information about the working process of air brakes.

Air brakes in automobiles work based on the principle of Pascal's law, which states that pressure exerted on a fluid is transmitted uniformly in all directions. Air brakes are commonly used in heavy-duty vehicles such as trucks, buses, and trains, where hydraulic brakes may not provide sufficient braking power.

Here is an overview of the working process of air brakes:

Air Compressor: The air brake system begins with an air compressor that is typically powered by the vehicle's engine. The compressor pressurizes atmospheric air and stores it in a reservoir or air tank.

Air Reservoir: The air reservoir or tank stores compressed air at high pressure, usually around 100-125 psi (pounds per square inch). The reservoir acts as a source of pressurized air for the braking system.

Brake Pedal: When the driver presses the brake pedal, a valve called the brake pedal valve opens, allowing compressed air to flow into the brake system.

Brake Chambers: The compressed air flows from the reservoir through various air lines to the brake chambers. Brake chambers are located at each wheel and convert the air pressure into mechanical force to apply the brakes.

Slack Adjusters: Each brake chamber is connected to a slack adjuster, which is responsible for adjusting the position of the brake shoes or brake pads. Slack adjusters ensure that the brakes engage and disengage properly and maintain optimal braking performance.

Brake Shoes/Pads: The brake shoes or pads are pressed against the brake drum or rotor when the brake is applied. This frictional force slows down or stops the vehicle by converting kinetic energy into heat energy.

Release of Brakes: When the driver releases the brake pedal, the air pressure is released from the brake chambers, allowing the brake shoes or pads to retract from the brake drum or rotor. This action releases the braking force and allows the vehicle to move freely.

Dual System and Safety: Most air brake systems in heavy-duty vehicles employ a dual system for safety. Dual systems consist of two separate air circuits: primary and secondary. If one circuit fails, the other can still provide braking power, ensuring the vehicle's safety.

Brake Control Valves: Air brake systems include various control valves to regulate the airflow and pressure within the system. These valves include the relay valve, quick release valve, check valve, and others, which help control the timing and intensity of brake application and release.

Overall, air brakes provide a reliable and powerful braking mechanism for heavy-duty vehicles by utilizing compressed air to generate the necessary force to slow down or stop the vehicle.