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1.轮胎的制动性及其对行车安全的影响。汽车制动力(滚动阻力)不仅取决于车辆制动系的性能、车辆的操纵性能,还与轮胎和路面的摩擦力有关系。制动性即汽车行驶时能在短时间内,停车且维持行驶方向稳定性和在下长坡时能维持一定车速的能力。摩擦系数是比较各种不同路面的摩擦力指标,一般来说,干燥铺装路面的摩擦系数大约为0.8,湿路面、积雪路面以及结冰路面的摩擦系数依次降低,制动距离依次延长。在湿滑路面上驾车时,灰尘因变湿而成泥浆,将导致
1. Tire braking and its impact on driving safety. Automotive braking force (rolling resistance) depends not only on the performance of the vehicle’s braking system, the handling of the vehicle, but also the friction of the tire and the road. Braking is the ability of a car to park in a short period of time while maintaining driving direction stability and maintaining a constant speed while going downhill. The coefficient of friction is a measure of the friction between different road surfaces. Generally speaking, the friction coefficient of dry pavement pavement is about 0.8, the friction coefficients of wet pavement, snow pavement and icy pavement decrease in turn, and the braking distance increases in sequence. When driving on a slippery road, the dust becomes muddy as it becomes wet and will cause it