What is the principle of automobile braking?

Drum brake is a traditional braking method, and its working principle can be vividly described by a coffee cup. The brake drum is like a coffee cup. When you put five fingers in a spinning coffee cup, the fingers are brake pads. As long as you point the five fingers outward and rub the inner wall of the coffee cup, the coffee cup will stop turning.

The drum brake on an automobile is simply composed of a brake oil pump, a piston, a brake pad and a drum. When braking, the piston is pushed by the high-pressure brake oil of the brake cylinder, exerting force on the two half-moon brake shoes, pressing the inner wall of the brake drum, and preventing the brake drum from rotating through friction, thus achieving the braking effect.

2. Disc brake

In recent years, the speed of cars is getting faster and faster, and the total weight of trucks and buses is getting bigger and bigger. In addition, the center of gravity of automobiles is generally reduced, and small-diameter wide-section tires are widely used, which limits the installation position of brakes. Therefore, disc brakes with better braking thermal stability are increasingly applied to heavy trucks and cars. Disc brakes can be divided into caliper disc brakes and full disc brakes.

Extended data:

Composition of automobile braking system;

1, energy supply device

Includes various components for supplying and adjusting the energy required for braking and improving the energy transmission medium. The part that produces braking energy is called braking energy.

2. Controller

Includes various components for generating braking effect and controlling braking effect. The brake pedal mechanism is the simplest control device.

3. Transmission equipment

Includes various components that transfer braking energy to the brake, such as master cylinder and wheel cylinder.

Step 4 brake

Components that generate a force (braking force) that hinders the movement or movement tendency of the vehicle also include a reducer in the auxiliary braking system. At present, a perfect braking system also includes braking force adjustment devices and additional devices such as alarm devices and pressure protection devices.

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