The braking principle of high-speed railway is very complex, and there are relatively few opportunities for daily contact.

As we all know, the car braking system is the most important safety device in the car, its function is to ensure the driving safety and make the car park reliably. But what many people don't know is that there are four braking systems on the car, namely the service braking system (foot brake), the service braking system (hand brake), the emergency braking system and the auxiliary braking system. The purpose of this is to prevent the failure of the car's braking system and the complete loss of control of the car, which can effectively improve the driving safety of the vehicle.

Automotive braking systems, also known as brakes, refer to stopping or reducing the speed of locomotives, vehicles, and other vehicles or machinery.

The driving braking system is often referred to as the foot brake and is the most important device in the braking system, responsible for most of the braking tasks. The function of the braking system is to slow down or stop the shortest distance as needed to ensure safe driving.

According to the working medium, the service braking system can be divided into two types: pneumatic braking system (large passenger car, truck) and hydraulic braking system (family car, car). It works in much the same way: when we press the brake pedal, the pedal force is converted into wheel braking force by the brake master cylinder and brake wheel cylinder, which slows the car to a stop.

The purpose of the service brake system is to stabilize the vehicle at a stop and prevent it from rolling. In this braking system, small cars use hydraulic braking, and large cars use pneumatic braking.

Small cars with hydraulic braking, there are two kinds of mechanical handbrakes and electronic handbrakes on the car, which are braked by controlling the two rear brake calipers. The mechanical handbrake requires manpower to lift up, pull up the handbrake lever, and drive the cable to clamp the brake pads and brake discs in the wheel brakes to generate braking force, so as to prevent the vehicle from slipping by itself.

For large vehicles with hydraulic brakes, the braking method of this model is a strong spring parking brake, commonly known as a strong spring parking brake, commonly known as hydraulic braking. "Air brake".


The car's parking brake system also shoulders the function of emergency braking. Different systems work differently and have different braking effects.

Mechanical handbrake: When the mechanical handbrake is pulled up, the rear wheel can be braked. You need to hold down the handle and slowly pull it up.

Electronic parking: Electronic parking is a technology that realizes parking braking through electronic control. Controlling the parking brake by the friction between the disc and the pads is a dynamic emergency stop function.

Powerful spring parking brake: Powerful spring parking brake has the function of air-cut braking, which can be used to realize emergency braking of the car.


The auxiliary braking system on the car mainly includes engine braking, electric turbine deceleration, hydraulic turbine deceleration, exhaust braking, etc. Their function is to increase the resistance of the transmission system to prevent the car from sliding too fast, but they can only make The car slows down and cannot be stopped.

Engine braking can be applied to all models, mainly using the compression resistance generated by the compression stroke of the engine, internal friction and intake and exhaust resistance to form a pinning effect on the driving wheel, preventing the driving wheel from slipping faster and faster.

Electric turbo deceleration, hydraulic turbo deceleration and exhaust braking are mainly suitable for large passenger cars and trucks. When the car slides, it will generate a force opposite to the rotation direction of the drive shaft to prevent the car from sliding too fast. Normally it works automatically.