What is the adhesion of the pavement and what is the condition of the pavement adhesion increases

Indicates the adhesion of the tire to the road surface. The magnitude of the adhesion is the product of the weight of the vehicle and the adhesion coefficient of the road surface.

This is for the whole car, and if it is for one wheel, then the adhesion of the wheel should be: the vertical reaction force on the ground to which the wheel is subjected.

Multiply the road adhesion coefficient. Adhesion is a fixed value that does not change according to human will, but according to experiments, the adhesion coefficient is related to the speed of the vehicle and the degree of sliding of the wheels on the road surface (including slip and slip).

Factors influencing adhesion.

1) The cleanliness of the coating surface will affect the quality of adhesion. For example, when there are other contaminants such as oil stains and moisture on the surface of the coated object, it will lead to a decrease in adhesion, and the surface of the sample should be avoided as much as possible, and the test surface should be carefully inspected before the test, and the test surface should be wiped clean with an appropriate solvent or a clean soft cloth.

2) The flatness of the coating surface. When the adhesive tape method is adopted, the coating surface is flat and smooth, and the tape can be well pasted on the coating surface, and the adhesion of the coating can be truly reflected when peeling; The surface of some special purpose coatings is not flat, the tape cannot be closely touched with the surface of the coated object, and the results observed after peeling do not truly reflect the adhesion of the coating, so it is not recommended to use the adhesive tape adhesion for testing.

Automobile adhesion is the limit value of the tangential reaction force of the ground on the tire. The size of the adhesion depends on the weight of the vehicle, the material of the tire, the type, the pattern, the pressure, the type of ground, the dryness, the temperature and the speed.

The tire of the car is one of the important parts of the car, the tire is in direct contact with the ground and the suspension system of the car, which together alleviate the impact of the car during driving, so that the car maintains good comfort and driving stability, and a good tire can ensure that the wheels and the road surface have good adhesion, so as to improve the traction and driving force of the car. The tires of the car need to bear the weight of the car when it is empty and fully loaded, so the models of different weights have different tires, and some models will also be equipped with spare tires, which are divided into full-size spare tires and non-full-size spare tires, and the full-size spare tires are the same as the original tires, and the non-full-size spare tires can only be used as temporary substitutes. A hub is a metal part mounted on the axle that supports the tire on the inside of the tire, and can also be called a rim.

There are many different types of rims according to the diameter and width of the manufacturing materials, the rims of ordinary models are considered less in appearance, and the heat dissipation performance of the rim is the main requirement that ordinary car tires need to consider, and the basic porcelain treatment is adopted.

The adhesion coefficient is the ratio of the adhesion to the normal (perpendicular to the road surface) pressure of the wheel. It can be seen as the coefficient of static friction between the tire and the road surface. The greater this factor, the greater the available adhesion and the less likely the car is to skid.

After saying so much, I don't understand what attachment is, can you explain what attachment is?

The meaning of car adhesion refers to the adhesion of tires and road surface, the weight of the car, the material of the tire, the type, the pattern pattern, the tire pressure, the roughness of the road surface, the friction coefficient, the speed of the car and so on are related to the adhesion of the car, the adhesion has a certain role in driving safety, such as greater adhesion can provide greater cornering safety, so that the vehicle is not easy to skid.

Car adhesion refers to the adhesion of tires to the road surface. The weight of the car, the material, type, pattern pattern, tire pressure, roughness of the road surface, the friction and rubbing coefficient, the speed of the car, etc., are related to the adhesion of the car, and the adhesion has a certain effect on driving safety, such as greater adhesion can provide greater cornering safety, so that the vehicle is not easy to skid.

Why does adhesion get smaller?

1. In rainy days, the friction factor of the road surface will be reduced because of the rain, so when the speed is low, the adhesion will decrease;

2. When driving at high speed in rainy days, the ground will form dynamic pressure lubrication between the high-speed rotating wheels and the ground due to the high relative motion, and a thin layer of water will be formed between the ground and the wheels. In this case, the friction factor is reduced to a minimum. Adhesion can also quickly drop to very little.

The adhesion is extremely small, and the car is very easy to lose control, which is very dangerous;

3. If the tire pressure is too high or the wear is serious, the tire pressure is too high, the contact area between the tire and the ground will be reduced, the rolling resistance will be significantly reduced, and the adhesion will be reduced; Severe tire wear will lead to a decrease in the friction between the tire and the ground, and the adhesion of the tire will also be reduced.

The amount of adhesion depends on the weight of the vehicle, the type of ground, the material and type of the tire, the tire pressure, the temperature and the speed of the vehicle. The driving conditions of the car are complex and diverse, so it should be analyzed differently according to the different driving conditions of the car, and in special cases, the adhesion coefficient can be increased by adjusting the tire pressure.

Larger diameter tires can be used to improve adhesion, as the larger diameter of the tire also increases the contact area with the ground, which can improve adhesion. The contact area between the radial tire and the ground will be wider than that of the bias tire, so the use of radial tires can play a role in increasing the adhesion coefficient.

Photo by Pacific Automobile Network Q&A).