Application Of Nitrogen In The Automotive Industry

1. Improve the stability and comfort of tire driving. Nitrogen is an almost inert diatomic gas with very inactive chemical properties. The gas molecules are larger than oxygen molecules, are not prone to thermal expansion and contraction, and have a small deformation range. Its penetration rate into the tire sidewall is about 30 to 40% slower than that of air, and it can maintain Stabilize tire pressure, improve tire driving stability, and ensure driving comfort; nitrogen has low audio conductivity, equivalent to 1/5 of ordinary air. Using nitrogen can effectively reduce tire noise and improve driving quietness.

2. Prevent tire blowout and running out of air. Flat tires are the number one cause of road traffic accidents. According to statistics, 46% of traffic accidents on highways are caused by tire failure, of which tire blowouts account for 70% of total tire accidents. When the car is driving, the tire temperature will rise due to friction with the ground. Especially when driving at high speed and emergency braking, the temperature of the gas in the tire will rise rapidly and the tire pressure will increase sharply, so there is a possibility of tire blowout. High temperatures cause the tire rubber to age, reduce fatigue strength, and cause severe tread wear, which is also an important factor in possible tire blowout. Compared with ordinary high-pressure air, high-purity nitrogen is oxygen-free and contains almost no water or oil. It has low thermal expansion coefficient, low thermal conductivity, and slow temperature rise, which reduces the speed of tire heat accumulation. It is non-flammable and does not support combustion. , so the chance of a tire blowout can be greatly reduced.

3. Extend the service life of the tire. After using nitrogen, the tire pressure is stable and the volume change is small, which greatly reduces the possibility of irregular tire wear, such as crown wear, shoulder wear, and eccentric wear, and increases the service life of the tire; the aging of rubber is Due to the oxidation of oxygen molecules in the air, its strength and elasticity decrease after aging, and there will be cracks. This is one of the reasons for shortening the service life of tires. The nitrogen separation device can greatly eliminate oxygen, sulfur, oil, water and other impurities in the air, effectively reducing the oxidation degree of the tire inner lining and the corrosion of rubber, and will not corrode the metal rim, extending the use of the tire. lifespan and greatly reduces rim rust.

4. Reduce fuel consumption and protect the environment. Insufficient tire pressure and increased rolling resistance after heating will cause an increase in fuel consumption when driving. Nitrogen, in addition to maintaining stable tire pressure and delaying tire pressure reduction, is dry, contains no oil or water, and has low thermal conductivity. , the slow heating feature reduces the temperature rise when the tire is running, and the tire deformation is small, the grip is improved, etc., and the rolling resistance is reduced, thereby achieving the purpose of reducing fuel consumption.