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15.为什么拖拉机驱动轮轮胎的气压在田间作业和在公路上运输时要求不一样? 拖拉机在田间作业时,驱动轮轮胎气压一般都规定在一个大气压以下,多为0.8公斤力/厘米~2,有些超低压轮胎可降低到0.6公斤力/厘米~2。而在公路上进行运输工作时,驱动轮轮胎气压都在1.2公斤力/厘米~2以上。为什么轮胎充气压力在田间要低,而在公路上要高呢? 拖拉机在工作时轮胎气压大小对产生推进力和自身行驶的滚动阻力影响很大。在田地里降低气压会增加车轮的接地面积,提高附着性能,同时使接地压力
15. Why tractor drive wheel tire pressure in the field and on the road when the transport requirements are not the same? Tractor in the field operations, the driving wheel tire pressure is generally prescribed below an atmospheric pressure, mostly 0.8 kg force / cm ~ 2, Some ultra-low pressure tires can be reduced to 0.6 kg / cm ~ 2. While carrying on the road transport work, the driving wheel tire pressure is in the 1.2 kg force / cm ~ 2 above. Why tire inflation pressure in the field to be low, but high on the road it? Tractor tire pressure at work to produce propulsion and rolling resistance of their own great influence. Reducing air pressure in the field will increase the ground area of the wheel and improve adhesion while grounding pressure