Views: 92 Author: Site Editor Publish Time: 2020-10-27 Origin: Site
The function of tire pressure monitoring system (TPMS) is to automatically monitor the tire pressure in real time during the driving process, and to alarm the tire leakage and low pressure to ensure the driving safety.
There are many ways to mend the tire. In addition to going to a professional auto parts factory to mend the tire, if the damage on the tire is not very serious, the tyre mending liquid can also be for repair. Is tyre pressure monitoring system affected by tyre repair liquid? This is also a problem that many drivers pay special attention to.
Generally, as long as there is obvious damage to the tire, for example, when it is pierced by a nail, it can be repaired with tyre repair liquid. However, it should be remembered that if the cut of the tyre is too large or the tyre wall is perforated, the tyre repair fluid cannot be used. In addition, vehicle models with TPMS system should not be applied for vehicle tire repair liquid, otherwise the equipments of tire monitor system in the tire will be damaged, resulting in a loss far greater than the tire value. When the temperature is too low or the altitude is too high, the tyre repair liquid should also be used with caution.
Compared with the traditional tyre repair, the advantages of tyre repair liquid are very obvious. First of all, it is simple and fast, no tire change, no jack. It can be done in about one or two minutes. Secondly, tire repair liquid can prevent multiple punctures. After the use of tyre repair liquid, a lot of liquid remains in the tyre, and the tyre keeps rolling during driving. Therefore, if the tyre is punctured again in a short time after the use of tyre repair liquid, the residual tyre repair liquid still works.
Because of the weight of the tyre repair liquid, it will affect the dynamic balance of the tyre. After the use of tyre repair liquid, the surface layer of the tyre will suffer from corrosion more or less, and a colloidal protective membrane will be formed on the surface layer of the tyre. It will affect the grinding and sticking in the process of tyre repair, so the operation will be difficult and there is a risk that the tyre cannot be repaired.
Car tire repair liquid can only be used as a temporary emergency. Do not always rely on tire repair liquid. Otherwise, although it can temporarily repair the air leakage point on the tire, it does not really achieve the purpose of tire repair. If there is air leakage during driving, the harm is very great.
The wheel hub is a round barrel shaped metal part, the center of which is installed on the axle to support the tire. If the hub is to be replaced, what is the impact on tire pressure monitoring?
TPMS can be divided into direct TPMS, indirect TPMS and compound TPMS.
The direct tire pressure monitoring device directly measure the tire pressure with the type pressure sensor installed in each tire, and send the pressure information from the inside of the tire to the central receiver module with the wireless transmitter, then displays the tire pressure data. When the tire pressure is too low or leaks, the system will automatically alarm.
The working principle of indirect tire pressure monitoring is that when the air pressure of a tire decreases, the weight of the vehicle will make the rolling radius of the wheel smaller, resulting in its speed faster than other wheels. By comparing the speed difference between tires, the purpose of monitoring tire pressure can be achieved. In fact, the indirect tire warning system monitors the air pressure by calculating the tire rolling radius.
It has the advantages of the two systems mentioned above. It is equipped with a direct sensor in two tires which are diagonally opposite to each other and a 4-wheel indirect system.
The universal tire pressure sensor of the direct tire pressure monitoring system is installed on the air supply port of the wheel hub. Some are installed on the inner side, which is called the built-in tire pressure monitoring system. Some are installed on the outside, which is called external tire pressure monitoring system. Therefore, when replacing the hub, the car tire pressure sensor should be removed and reinstalled on the new hub. For indirect TPMS, the wheel hub can be replaced directly without any influence. The compound TPMS is similar to the direct TPMS and the corresponding accessories are required to be removed from the hub.
It is also necessary for car owners to understand these common tyre monitoring system problems.
