The purpose of automobile wheel inspection, what are your insights on the inspection of automobile w

Tire pressure, strictly speaking. Air pressure inside the tire. On the rear of the driver's side door, there is a standard tire pressure marker, which is the pressure when the tires are cool, i.e. when they are parked for at least three hours or when they do not drive exceeded.

Tire pressure is most accurately measured when the tires are cool. Here's how: 1

Direct tire pressure monitoring: The connected tire pressure monitoring device uses the pressure sensor installed in each tire to directly measure the air pressure of the tire, and uses a wireless transmitter to send the pressure information from the inside of the tire to the receiver module, and then displays the tire pressure data. When the tire pressure is too low or flat, the system will automatically alarm.

2.Indirect Tire Pressure Monitoring: Indirect tire pressure monitoring works by:

When the air pressure of one tire decreases, the weight of the vehicle causes the rolling radius of that wheel to become smaller, causing it to spin faster than other wheels. By comparing the speed difference between tires, the purpose of monitoring tire pressure is achieved. The indirect tire alarm system actually relies on calculating the rolling radius of the tire to monitor the air pressure.

3.Tire Monitoring System (TPMS) Introduction: It combines the advantages of the above two systems, it is equipped with direct sensors in two tires at opposite angles to each other, and is equipped with a 4-wheel indirect system.

This composite system reduces costs compared to using all direct systems and overcomes the disadvantage that indirect systems cannot detect low air pressure on multiple tires at the same time. However, it still does not provide real-time data on the actual pressure inside all 4 tires like a direct system can.

Prevent and prevent accidents caused by car tire bursts.

Hello, check in order to find the problem in time.

How should I check the wheel alignment of the car more carefully? Automobile maintenance and inspection is very important, which is related to the safety factor of the car on the road, and the wheel of the car should be very careful when inspecting, so how to check the wheel alignment of the car more carefully? A lot of people don't know where the wheels are when driving, and they often hesitate or even scratch because they can't calculate the distance, but these are the little things.

If they bump into someone because of this, something big will happen. Is there any good way to say exactly what is the position of the left and right wheels?

Install the sensor bracket on the wheeled vehicle, then mount the sensor (positioning correction head) on the bracket and adjust it as specified in the operating manual. Start and enter the test program, enter the model and year of production of the vehicle to be inspected. Wheel deformation compensation.

When the steering wheel is in a straight position and each wheel rotates for one cycle, the wheel deformation error can be entered into the computer. Lower the second lifter so that the wheels land on the platform and press down on the front and rear of the vehicle 5 times to keep it under pressure**. Press the brake pedal with the brake lock to put the car in the braking state.

Turn the steering wheel to the left to the computer, make an "ok" sound, and enter the left turn angle; Then turn the steering wheel to the right, and the computer will make an "ok" sound and enter the right turn angle. Turn the steering wheel backwards, and the toe and camber values of the rear wheels will be displayed on the computer screen. Align the steering wheel and lock the steering wheel with the steering wheel lock, shutting the limbs to prevent it from turning.

If you ask how often you need to do a four-wheel alignment, there is no set cycle. Wheel alignment and maintenance are different, it's a way of maintenance. If there are no problems, there is no need for wheel alignment.

Four-wheel alignment is only required if the vehicle breaks down. Relatively speaking, those vehicles that are often on the road (especially the front wheels) or who pass through speed bumps quickly, as well as accidental collisions such as traffic accidents, are more likely to lead to wheel alignment deviations, and then the following problems need to be paid attention to.

Let's take a look at how to find the right wheel. Because of the distance, it is still difficult for novices to judge. Similarly, the steering wheel is also used as a reference, but it is the rightmost edge line that needs to be extended outward by 10cm.

The extension cord will be in the position of the left wheel, so we can judge, but the seat height of each person is different, so it will be different, which is why the right wheel is difficult to judge. Seeing this, I believe you should only know how to judge. In the future, if the road section is narrow, you can pass safely.

With proficiency in driving skills, judgment becomes easier.

With the development of the automobile industry, more and more people will have their own car, for the inspection of the car is also unavoidable, especially for friends who often drive, the maintenance and inspection of the car is essential, the number of times is also to make the car more safe to drive on the road, in order to ensure the service life of the car, more stable car driving process, can bring a great guarantee to our personal safety, the four-wheel alignment of the car is the most common way in car maintenance, Therefore, when our car has unstable brakes, driving shaking, etc., it is caused by the inaccurate positioning of our car, and it is necessary to check whether the four-wheel alignment is normal in time.

We know that the car will burst or be scratched by some nails in the car, we need to repair the tire, we must ask the maintenance worker to make a tire dynamic balance for our car at the same time, it is also the key to ensure the positioning of the car, the dynamic balance has a great effect on the tire, because the dynamic balance is for our tires in the driving due to the effect of centrifugal force to form an unbalanced state, resulting in car shaking and other reasons, We also want to avoid the adverse consequences of the car caused by similar situations in the future, and we need to repair it in time.

The four-wheel alignment of the car is mainly aimed at the unstable state of the suspension system in the wheels of the car, which can correct this state, so the four-wheel alignment can ensure the stability and balance of the suspension system of the car. Dynamic balance can ensure that the tires are in concentric motion during the operation of the tires, which can ensure the power balance, stabilize the driving of the car, ensure the wear of the tires, and bring safety guarantees.

The four-wheel fixed rotten group position of the car is also a problem with the car, although we sometimes have this kind of problem in the car, but it can also be driven, we need to check and maintain it regularly, so that there will be no such problem in the future, and the four-wheel alignment can ensure the stability of the car plays a vital role.

I think that when checking the positioning of car tires, we must send them to a professional car shop for inspection, because those professionals know more than us, and we can't learn these problems by ourselves. Wheel state.

The inspection of the wheel alignment of this car may need to be done every few days, mainly because of the disadvantage of the lead for the car wheels, if the positioning is not particularly accurate, it may lead to overturning. Of course, it is also necessary to ask a professional master to check it.

In addition to checking the degree of rotten wrapper on the surface, it is also necessary to check the wheel hub and tire rim, which will affect the positioning.

This is very important, if you want to drive the car very smoothly and there will be no error, you must do 4 wheel alignment, so that there will be no deviation, so that you will not be notified of accidents.

1. Air pressure. Always have a handy travel-size barometer on hand.

2. Before traveling or after returning, check whether the tire has normal air pressure, check whether the tire has quality faults such as blistering, degumming, delamination, etc., in addition to whether there are scratch marks on the tire mouth.

3. Check whether the steel ring is scratched, deformed or other abnormalities at the same time? (Have one or two valve cores ready).

4. Before leaving the car, there is time to "pick out" some stones and sediment in the tire cracks, so as not to adversely affect the driving comfort and noise, or affect other driving parameters. In addition, these peculiarities also have the "damage" of the tire rubber layer. (It is recommended to have an inflator pump on hand at all times).

5. Check whether the whole set of tires has camber or serious cambering, and check the brake shoe by the way, such as: thickness, brake disc wear, etc. These are all checked in the case of "incidental" when checking tires! One has more interests, and driving is safer.

You should check your tire pressure, including a spare tire, at least once a month or before every long trip.

When checking the tire pressure, it should be done in a cold tire state, that is, it should be checked after parking for at least three hours. If necessary, the tire pressure should be supplemented to the pressure specified on the car sign. Because cold tires give the most accurate readings, you should drive to the nearest inflation point to inflate whenever possible.

Hot tires are forbidden to deflate or decompress. It is normal for tires to be at a higher pressure than the recommended cold inflation pressure after the tire heats up due to driving. If you lower the pressure on the hot tires, the pressure won't be enough when it's cooled.

Also, check the tire pressure with a high-quality air pressure gauge and don't trust your eyes too much. You can't tell if a tire is having the right inflation pressure from its appearance.

If the air pressure is too low, find out the cause (e.g., nails, cuts, valve rubber aging, cracking).

Tire inspection is very important, and you need to check before traveling: 1. Whether the tire tread has problems such as nails, breakage, scratches, bulges, irregular wear, etc.; 2. Whether the tire has problems such as rolling and gas loss; 3. Whether the spare tire is normal; 4. Whether the tire changing tools are complete.

Check the spare tire of the tire, the air pressure of the 4 wheels, see if there is any insufficient tire pressure or bulge or something, stones on the tire or something, remove it and so on!

The inspection of tires is mainly to check the degree of wear of tires and tire pressure, and the inspection of the degree of wear of tires includes the inspection of the depth of the tread pattern and the inspection of abnormal wear of tires. Check the depth of the tread pattern. GB7258-1997 "Technical Conditions for Motor Vehicle Operation Safety" stipulates that the pattern on the crown of the passenger car tire is worn to the depth of the closing of the flower banquet and the depth of the Songxiang is less than the wear mark), the depth of the pattern on the crown of the truck steering tire is less, and the depth of the crown pattern of the rest of the tires is less than that of the rest of the tires, it should be discontinued.

The tire tread depth can be measured with a depth gauge. Check for abnormal tire wear and tear. Checking the abnormal wear of tires can find the early signs and causes of failure, so as to eliminate the undesirable factors that affect the life of tires in time and prevent early wear and damage.

For details, please refer to the following common tire fault diagnosis. Check the tire pressure. Tire pressure can be checked using a barometer.

Note that the air pressure value of the tires may be different for different vehicles, and you should refer to the repair manual of the respective vehicle when inspecting. Generally, the tire pressure of the front wheel of the Santana 2000 sedan is, and the tire pressure of the rear wheel is.

Tire pressure detection: check the air pressure of the four wheels and the spare tire through the tire pressure gauge, whether it is within the specified range value, and try to keep the tire pressure of all wheels consistent. Check the tire tread depth:

The tire pattern is related to whether the tire can give full play to the traction, braking, cornering, drainage and noise performance of the tire. If the tire pattern is less than millimeters or has worn to the tip line, it needs to be replaced as soon as possible to check whether the tire pattern is worn evenly: if there is tire gnawing or eccentric wear, the vehicle suspension system needs to be checked as soon as possible and the wheel alignment is required.

Check the tire pattern for sharp or large foreign objects: remove them with a retort if necessary. Check the outside of the tire for bulges, cracks, or cuts.

Check the tire valve for deterioration or air leakage.

Here are five habits that can prolong the life of your tires and make it a habit to check your tire pressure at all times. Air pressure is the key to extending the life of your tires – often exceeding 20% of normal air pressure, reducing the life of your tires by 10%; If the air pressure is constantly lower than 30% of normal air pressure, the tire life will be reduced by 52%. The air pressure must be consistent.

Tire pressure is the life of the tire, the air pressure is too low, the carcass deformation increases, the sidewall is prone to cracks, and at the same time leads to excessive heating, which promotes the aging of rubber, fatigue of the cord layer, and breaking of the cord. It is a habit to regularly remove foreign objects from tires. When the vehicle is driving on the road, there is often a thought that some stones are squeezed into the tread gap of the tire.

If these small stones are not removed in time, they can puncture the tire over time, resulting in a flat or puncture. Driving habits are in line with scientific requirements. When driving on the road with a large camber, it is necessary to drive in the center as much as possible to avoid and reduce the deviation of the high macro center of the car reshoot, and reduce the uneven tire wear due to the increase of tire load on one side.

The front and rear wheels maintain accurate orientation. Front wheel alignment has a significant impact on the service life of tires, especially front-wheel toe and front wheel camber. The camber of the front wheel mainly accelerates the wear of the shoulder, that is, eccentric wear; The toe-in of the front wheels mainly accelerates the wear of the inside and outside of the tire.

Outer edge size, tensile strength, rubber bending, elongation at break, permanent tear deformation, abrasion (Akron), hardness, durability, high-speed performance, appearance quality, tire lug bending test, sidewall glue ozone aging test, tensile strength of the traveler, air tightness, tubeless tire detachment resistance, adhesive strength, sinking amount, sinking rate, grounding coefficient, static load performance, tensile strength after aging, such as the absolute value of the sunning rate. The tire is one of the important parts of the car, which is in direct contact with the road surface, and the car suspension works together to alleviate the impact of the car when driving, and ensure that the car has good ride comfort and driving smoothness; Ensure that the wheels and the road surface have good adhesion, and improve the traction, braking and passability of the car; Bearing the weight of the car, the important role played by tires in the destruction of the chain on the car has been paid more and more attention.