Three situations of automobile braking process are analyzed.

Automobile braking system refers to a series of special devices that apply necessary force to some parts of the automobile (the key is the wheel) to make them brake to the necessary degree. The function of the braking system is: to make the driving car slow down or even stop according to the driver's requirements; Keep the parking lot stable under various road conditions (including ramps); Keep the speed of the car stable when it goes downhill. Subsequently, the car editor patiently introduced three situations of analyzing the braking process of the car to his friends.

brief introduction

The external forces acting on the car in the opposite direction can only be used to respond to the start of the car, and the magnitude of these external forces is basically random and cannot be adjusted. Therefore, a series of special devices must be installed in 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. Automobile braking system mostly includes two independent devices, namely, starting braking device and parking braking device. The service brake device is operated by the driver's feet, so it is also called foot brake device. The parking brake is operated by the driver's hand, so it is also called hand brake.

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 parked on various roads stationary. 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. Some special-purpose cars and cars that often drive in mountainous areas will affect the overheating of the starting braking device for a long time, so these cars are often equipped with various types of cushion braking devices to stabilize the speed when going downhill.

According to the different braking energy, the braking system can also include three types: manual braking system, dynamic braking system and servo braking system. The manual braking system takes the driver's physical strength as braking energy; The braking system uses air pressure or hydraulic pressure converted from engine power as braking energy; 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 include mechanical, hydraulic, pneumatic and electromagnetic.

In the automobile braking system, the brake is a component of the force used to stop the automobile from moving or moving. The brakes used in cars are basically 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.

Formal classification

Drum brake

Drum braking is a traditional braking method, and its working principle can be vividly described as coffee cup. The brake drum is like a coffee cup. When you put five fingers in a spinning coffee cup, your fingers are brake pads. As long as your fingers point outward and rub the inner wall of the coffee cup, the coffee cup will stop turning. Simply put, the drum brake on an automobile consists of a brake oil pump, a piston, a brake pad and a drum chamber. When braking, the piston is pushed by the high-pressure brake oil of the brake cylinder. correct

Disc brake

In recent years, the speed of cars has been increasing, and the total weight of trucks and buses has also been increasing. In addition, the center of gravity of automobiles generally drops, and tires with small diameter and wide section are widely used, which limits the installation position of brakes. Therefore, disc brakes with better braking thermal stability are used more and more in heavy trucks and cars. Disc brakes can include caliper disc brakes and full disc brakes.

Disc brake is also called disc brake, and its working principle can be described by a disc. When you hold the turntable with your thumb and forefinger, the disc brake will stop turning. The disc brake on an automobile consists of a brake oil pump, a brake disc connected to the wheel and a brake caliper on the brake disc. When braking, high-pressure brake oil pushes the piston in the caliper and presses the brake shoe against the brake disc, which will produce braking effect.

Disc brakes Disc brakes are sometimes called disc brakes. Divided into ordinary disc brakes and ventilated disc brakes.

Ventilated disc brake is to reserve an empty gap between two brake discs, so that air flow can pass through this empty gap. Some ventilation disks also drill many circular ventilation holes on the disk surface, or cut ventilation slots or prefabricate rectangular ventilation holes on the disk surface. With the help of airflow, ventilated disc brakes need better cooling and heating effects than ordinary disc brakes. The key advantage of disc brake is that it can brake quickly when braking at high speed, the heat dissipation effect is better than that of drum brake, the braking efficiency remains unchanged, and it is convenient to install advanced electronic equipment such as ABS. The main advantages of drum brake are less brake shoe wear, low cost and easy maintenance. Because the absolute braking force of drum brake is much higher than that of disc brake, it is widely used in rear-wheel drive trucks.

Well, today, a friend of Auto Bian Xiao briefly introduced so many three situations to analyze the braking process of the car. I don't know if my friends have a deeper understanding of the three situations of analyzing automobile braking process after listening to the brief introduction of Bian Xiao. I hope the profile of Bianxiao Automobile can help my friend. If you want to know more, pay attention to this website. Bian Xiao's car is waiting for you here!

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