Tire is a rolling -shaped elastic rubber product assembled on a variety of vehicles or machinery.Usually installed on the metal wheel, it can support the body, buffer external impact, realize contact with the road and ensure the driving performance of the vehicle.Tires are often used under complex and harsh conditions. It has various deformation, load, force, and high and low temperature effects when driving. Therefore, it must have high loading performance, traction performance, and buffer performance.At the same time, it also requires high wear resistance and flexion resistance, as well as low rolling resistance and heating.
Tire function
First, the tire is a carrier transmitted between the vehicle and the pavement. The driving power, braking force, steering force, etc. are transmitted through the tire to realize the operation of the car, braking, and steering of the car.
Second, support vehicle load.The load of the vehicle causes the tire to sink, until the average pressure of the area of ??the tire connecting the ground is balanced with the inflatable pressure inside the tire.
Third, reduce and absorb the vibration and impact of the driving process of the car, prevent the car parts from being severely vibrated and cause early damage.At the same time, it adapts to the high -speed driving status of the vehicle and reduces driving noise to ensure the safety, comfort, manipulation stability and fuel economy of driving.
Tire performance requirements
As the only part of the tires in contact with the ground, the quality of the tires directly affects the safety of vehicle drivers and passengers.Clear requirements.With the rapid advancement of the automotive industry, consumers have begun to pay attention to the comfort, control stability, NVH and other properties of the entire vehicle while paying attention to the safety of tires.
The first category is the safety performance required by regulations: high -speed, durable, detonating, strength, outer edge size;
In the second category, the performance of tire assembly to the entire vehicle test: comfort, control stability, NVH, fuel economy, impact resistance, dry and wetland braking performance, grinding performance, etc.;
The third category is a single performance test in order to study the performance of tire monomer or the performance of tires assembled on the vehicle: static grounding pressure distribution, rolling resistance, tire rigidity, tire monomer noise, tire modal, PRAT,,, PRAT,Six -point force testing, smell, gas tightness, environmental protection, tire motion balance uniformity, etc.

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