知识与财富的链接
为得出制动参数对汽车风冷盘式制动器摩擦学特性的影响机理,考虑空气流动和车辆惯性因素,基于噪声、振动与声振粗糙度（NVH,Noise Vibration and Harshness）台架试验机精确模拟制动工况,研究摩擦副表面在不同制动压力（1.0~3.0 MPa）、行驶速度（5~30 m/s）以及温度（100~350 ℃）条件下平均摩擦系数与摩擦稳定系数的变化规律。试验结果表明：制动压力增大时,摩擦力矩并非一定随之增大,尤其是较高行驶速度条件;当制动盘表面温度超过300 ℃时,低速条件下的平均摩擦系数和摩擦稳定系数急剧减小。
In order to get the effect of braking parameters on tribological characteristics of automobile air cooled disc brake, with the consideration of air flow and vehicle inertia factors, the experimental study is carried out based on a NVH (Noise, Vibration and Harshness) bench test machine. The change rule of average friction coefficient and friction stability coefficient of air cooled disc brake friction pair surface under different braking pressures(1.0 ~ 3.0 MPa), driving speeds(5 ~ 30 m/s) and temperatures (100~ 350 ℃) is researched. The test results show that when braking pressure increases, friction moment does not necessarily increase, especially at high speed. When the temperature of cooled brake disc surface exceeds 300 ℃, the friction coefficient and friction stability coefficient decrease sharply at low speed.
