What are the braking methods of cars?

Automobile braking mode is as follows:

1, service braking, which is used for the running vehicle, and the brake cylinder is controlled by the brake pedal, so that the driving wheel changes from motion to stop;

2, parking brake, this method is generally used in parking, by pulling the pull rod to lock the rear wheel, to prevent the car from slipping back;

3, engine braking, this way is generally used in high-speed vehicles, by downshifting, using the traction of the engine to reduce the speed.

brief introduction

Only the external force acting on the car in the opposite direction to the direction of the car can make the car brake, and the magnitude of these external forces is random and uncontrollable, so a series of special devices must be installed on the car to realize the above functions.

Automobile braking system refers to a special braking mechanism with braking device installed on the automobile in order to technically ensure the safe driving of the automobile and improve the average speed of the automobile. Generally speaking, the automobile braking system includes two independent devices: the service braking device and the parking braking device. Among them, the driving brake device is operated by the driver with his feet, so it is also called the foot brake device.

The parking brake device is operated by the driver by hand, so it is also called hand brake device.

The function of the service braking device is to slow down the moving car or stop it in the shortest distance. The function of the parking brake device is to keep the cars that have been parked on various roads still. But sometimes in an emergency, two kinds of braking devices can be used at the same time to increase the braking effect of the car.

For some special-purpose cars and cars that often drive in mountainous areas, frequent braking for a long time will lead to overheating of the braking device, so these cars are often equipped with various types of auxiliary braking devices to stabilize the speed when going downhill.

According to the braking energy, the braking system can also be divided into manual braking system, dynamic braking system and servo braking system. Manual braking system takes the driver's physical strength as braking energy; The dynamic braking system uses air pressure or hydraulic pressure converted from engine power as braking energy; The servo braking system uses manpower and engine power as braking energy.

In addition, according to the transmission mode of braking energy, the braking system can be divided into mechanical, hydraulic, pneumatic and electromagnetic.

In the automobile braking system, the brake is a component in the automobile braking system that generates a force to prevent the vehicle from moving or moving. The brakes used in cars are all friction brakes, that is, the braking torque that prevents the car from moving comes from the friction between the fixed element and the rotating working surface.