What role does nitrogen play in automobile tyres?

Nitrogen is chemically stable and is a colorless, odorless gas. What is nitrogen used in car tires? The following is a brief summary of 4 points for everyone, I hope it will help you.
1. Improve the stability and comfort of tire driving
Nitrogen is an almost inert diatomic gas with extremely inactive chemical properties. The gas molecules are larger than oxygen molecules, so it is not easy to expand with heat and contract with cold, and the deformation range is small. Stable tire pressure, improve tire driving stability, and ensure driving comfort; the audio conductivity of nitrogen is low, equivalent to 1/5 of ordinary air, and the use of nitrogen can effectively reduce tire noise and improve driving tranquility.
2. Prevent blowout and lack of air running
Blowout is the number one killer in road traffic accidents. According to statistics, 46% of traffic accidents on highways are caused by tire failures, among which puncture accounts for 70% of the total tire accidents. When the car is running, the temperature of the tire will rise due to the friction with the ground, especially when driving at high speed and emergency braking, the temperature of the gas inside the tire will rise rapidly, and the tire pressure will increase sharply, so there may be a possibility of a tire blowout. The high temperature causes the tire rubber to age, the fatigue strength decreases, and the tread wears violently, which is an important factor that may cause a tire blowout. Compared with ordinary high-pressure air, high-purity nitrogen has low thermal expansion coefficient, low thermal conductivity, and slow temperature rise because it is oxygen-free and almost contains no water or oil. , so it can greatly reduce the chance of a blowout.
3. Extend tire service life
After using nitrogen, the tire pressure is stable and the volume change is small, which greatly reduces the possibility of irregular tire friction, such as crown wear, tire shoulder wear, partial wear, and improves the service life of the tire; the aging of rubber is affected by oxygen molecules in the air Due to oxidation, its strength and elasticity will decrease after aging, and there will be cracks, which is one of the reasons for the shortened service life of tires. The nitrogen separation device can eliminate oxygen, sulfur, oil, water and other impurities in the air to the greatest extent, effectively reducing the oxidation degree of the tire inner liner and the phenomenon of rubber corrosion, and will not corrode the metal rim, prolonging the service life of the tire. The service life is also greatly reduced, and the rusting of the rim is also greatly reduced.
4. Reduce fuel consumption and protect the environment
Insufficient tire pressure and increased rolling resistance after heating will increase the fuel consumption of the car while driving; while nitrogen can maintain stable tire pressure and delay the reduction of tire pressure, it is dry, oil-free and water-free, and has low thermal conductivity. , slow temperature rise characteristics, reducing the temperature rise of the tire when walking, and the small deformation of the tire improves the grip, etc., reducing the rolling resistance, thereby achieving the purpose of reducing fuel consumption.