Inflation system of an automatic pneumatic tire
Must be able to transfer air from the air source to the tire (usually through the shaft tube). Some systems use a sealed hub tube and connect the hub with the tire valve by the hose. Other systems allow the inner tube to pass directly through the axle tube and use the axle tube as a vent pipe. ? both must be equipped with relief holes for removing air from the tires without damaging the hub or rear axle seals.
There are some ways to measure tire pressure. In most cases, they use central sensors to pass information to the electronic control unit and then notify the driver. There is an air source, usually the existing system on the vehicle, such as a brake or pneumatic system. However, when using existing systems, they must ensure that the original functionality of these systems is not affected. To this end, there will be corresponding safety inspection measures. First of all, make sure that there is enough air pressure for the main use of the gas source before you can inflate it.
Some types of valves are used to isolate the tires so that other tires will leak when checked or inflated
