| 摘要 |
<p>The air pressures of the tires of all vehicles are fixed at proper valu e. So, when the pressure is low, the mileage is degraded, but the traveling distance on sudden braking is reduced. On the contrary, when the pressure is high, the mileage is improved at the cost of an aggravated braking distance. Accordingly, we are supposed to inject a proper amount of air on the compromise of good mileage and short braking distance, and the pressure is maintained invariantly. The wheel of this invention makes it possible that tires have high pressure an traveling and low one on sudden braking, consequently mileage improvement and shortene d traveling distance on sudden braking are realized at the same time.</p> |
