THE POSSIBILITY OF REDUCING TIRE GAS PERMEABILITY THROUGH THE USE OF VARIOUS GASES

Research has shown that currently Russia does not properly monitor the condition of tire pressure in vehicles. More than half of the vehicles operated in our country have a deviation in tire air pressure, which leads to higher operating costs, a deterioration in the environmental friendliness of transport, and a decrease in the safety of transport processes. During the operation of automobile tires, the internal pressure in the tire changes with varying intensity. This is due to mechanical damage and punctures in the tires, as well as aging of the rubber and gas loss due to the gas permeability of the tire. The change in tire pressure is also affected by violations of the rules for the installation, repair and operation of automobile tires. For pneumatic tires, the main gas used to inflate the wheels is air.The most important advantage of air is its accessibility and low cost. At the same time, the air is non-toxic and well resistant to diffusion. However, the use of air causes corrosion of the metal cord and reduces its strength. This is due to its hygroscopicity and the ability to release moisture in the form of condensate, which settles on the inner walls of the tire. Thus, it is relevant to study the possibility of replacing air for car tires with other gases, in particular, nitrogen. Studies show a number of advantages when using nitrogen for tires, the main ones being low diffusion and high resistance to ignition and explosion. This article discusses the concept of tire gas permeability. The theoretical and experimental dependences of tire pressure from various manufacturers on time are given. The process of loss of internal pressure with variable intensity is considered.