Yutong realizes tire filling nitrogen process as the first bus industry


With the joint efforts of Yutong Technology Department and the Department of Equipment Safety and other related departments, after six months of meticulous preparation, the Yutong chassis plant tire filling nitrogen equipment has been successfully put into use.

The key configuration of nitrogen-filled equipment is made up of imported advanced equipment. The air compressor can set operating parameters as required to achieve stable and accurate working pressure. The entire machine can be displayed in Chinese by computer maintenance instructions and alarms, to achieve the protection of the compressor in advance. The filtering device consists of a main road filter, a precision filter, a deoiling filter, and an activated carbon filter. The filter element adopts imported parts, and finally the precision filtering effect with a filtering accuracy of 0.01 μm and a residual oil content of 0.001 ppm can be achieved. The nitrogen generator is controlled by a programmable controller to realize automatic control of the equipment. At the same time, the purity of nitrogen gas is measured by an on-line real-time monitoring system using an intelligent oxygen analyzer, and the oxygen content is automatically exceeded. The molecular sieve of the machine adopts a multi-point compound automatic pressing device, which can realize that the molecular sieve will not be powdered for ten years.

After the equipment is used at the chassis tire packing station, after field testing, the entire equipment can be filled with 7 wheels in four minutes. At the same time, the purity of nitrogen gas filled can reach more than 98%. At present, all of Yutong's self-made chassis tires have been filled with nitrogen.

High-purity nitrogen has oxygen-free and almost no moisture, no oil, low coefficient of thermal expansion, low thermal conductivity, slow heating, non-flammable and non-combustible, penetrates the tire's sidewall faster than air, and is not easy to heat up and shrink. Small deformation, low audio conductivity and other characteristics. Compared with the previous tire inflation process, after the tire is filled with nitrogen, it has many advantages: it can reduce the chance of bursting tires and prevent run-flat grinding, thus improving the safety of the users. It can maintain the tire pressure stability, improve tire driving stability, and ensure driving comfort. Can reduce friction and corrosion, extend tire life. Can reduce tire noise and improve quietness. At the same time, it can also reduce the rolling resistance of vehicles and reduce vehicle fuel consumption, creating greater value for users.

It is understood that at present there is no enterprise in the domestic passenger car industry to achieve tire filling technology. Yutong is the first company. Yutong tire filling equipment is the first to put into use, will effectively improve product quality, and better meet the needs of customer differentiation, implement the company's "customer-centric" business management philosophy, highlighting Yutong as the "China's first brand of passenger cars" to lead the industry Responsibility for the direction of technological process development.

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