CRRC Nanjing project

Nitrogen is a kind of inert gas. Its nature is extremely inactive, and its gas molecules are larger than oxygen molecules, so it is not easy to expand and contract. In addition, it penetrates the tire wall much slower than air, which can ensure the stability of vehicle tire pressure. Moreover, its audio conductivity is relatively low. When using it, it can reduce tire noise, increase the quietness of vehicle driving, and provide a good driving environment for drivers.
After the use of nitrogen, the tire pressure is more stable, and the volume change of the gas in the tire is also small, which greatly reduces the irregular friction of the tire and virtually improves the service life of the tire. In addition, the aging of tire rubber is due to the oxidation of oxygen molecules. Nitrogen can greatly eliminate oxygen, sulfur, oil, water and most impurities in the air, extending the service life of the tire and reducing the occurrence of rim rust.