The pneumatic brake system used in trains relies on compressed air to control and apply braking force. This system is a fundamental method for stopping trains and has been widely used for decades.
In this system, traditional train braking systems use pneumatic valves to control and generate brake applications on the cars along the length of the train. This means that air pressure is the primary medium for signaling and applying the brakes throughout the entire train composition.
How it Works: The Basics
At its core, the pneumatic brake system functions by using changes in air pressure within a dedicated system running through the train. When the driver initiates braking, the air pressure in the system is altered, triggering mechanisms on each car to apply the brakes.
Key Components
According to the reference, the conventional pneumatic brake system generally consists of a few main components:
- Brake Pipe: This critical component is a continuous pipe that runs the entire length of the train, connecting each car. It serves as the main conduit for controlling the brakes.
- Reservoirs: Mounted on each car, these reservoirs store compressed air supplied by the brake pipe. This stored air is essential for applying the brakes on that specific car.
- Pneumatic Valves: These valves, located on each car and controlled via the brake pipe pressure, are responsible for regulating the flow of air from the car's reservoir to the brake cylinders, thereby applying or releasing the brakes.
Here's a simplified view of the main components:
| Component | Function |
|---|---|
| Brake Pipe | Runs through train; controls system pressure; supplies air to reservoirs |
| Reservoirs | Store compressed air on each car for braking |
| Pneumatic Valves | Control air flow from reservoir to brake cylinders for application/release |
In Summary
The pneumatic brake system in trains is a reliable mechanism that utilizes compressed air distributed via a brake pipe along the train's length. This conventional system consists of a brake pipe that runs the length of the train which supplies air to reservoirs mounted on each of the cars. Pneumatic valves then use this air to manage the application of brakes on individual cars, ensuring coordinated braking for the entire train.
