用户相关汽车动力传动系可靠性试验新方法

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (11) : 25-29.

论文

用户相关汽车动力传动系可靠性试验新方法

门玉琢1，于海波2，韩愈2

作者信息 +

New method of automotive reliability test correlated with customers based on output energy of powertrain

MEN Yu-zhuo1 YU Hai-bo2 HAN Yu2

Author information +

文章历史 +

摘要

为研究某重型载货汽车动力传动系的可靠性，提出一种基于山区典型公路与用户实际使用工况累积能量相关联的汽车动力传动系强化试验新方法，该方法能把用户对车辆的实际使用工况与山区典型公路强化试验结合起来，避免了以往传动系可靠性试验的盲目性。采集山区典型公路和用户真实用法的试验数据，通过传动轴扭矩对转速的联合分级矩阵获得输出累积能量分布载荷谱。结合用户实际调查的路面比例和车辆载重数据，根据Weibull分布概率纸直线方程及动力传动系累积能量数学模型，计算失效概率为90%条件下的四种用户典型路面和每个实际用户的总累积能量，并对分布函数进行K-S检验，然后利用Monte-Carlo方法仿真模拟90%用户的动力传动系输出总能量。通过山区典型公路和90%用户累积能量的相关性计算，获得山区公路的强化系数和可靠性试验规范，为科学评价和考核汽车动力传动系可靠性试验提供了重要依据。

Abstract

In order to study the reliability of the powertrain of a heavy-duty truck, a new method of enhancement test correlated with the actual application condition of powertrain cumulative energy based on the typical highway in mountain area is presented, which can combine customer actual usage conditions of vehicles with the enhancement test on the typical highway in mountain area to avoid the blindness of the previous powertrain reliability test. The test data are collected on the typical highway in mountain area and the actual customer roads, and the combined grading matrix of the torque of the power drive shaft to the rotational speed is used to obtain the cumulative energy distribution loading spectrum. According to the straight line equation of the Weibull distribution probability paper and the mathematical model of the powertrain cumulative energy, the total cumulative energy of the four typical customer roads and each actual customer under the failure probability of 90% is calculated by combining the proportion of the roads and vehicle load data in the actual survey, the Weibull distribution function can be checked through the K-S test method, and then the Monte-Carlo method is used to simulate the total energy output of the powertrain of 90% customer. The correlated calculation is conducted on the cumulative energy of the typical highway in mountain areas and 90% customer to obtain the enhancement coefficient and reliability test procedures of the typical highway in mountainous area so as to provide an important basis for scientific evaluation and assessment of the reliability of vehicle powertrain.

导出引用

门玉琢;于海波;韩愈. 用户相关汽车动力传动系可靠性试验新方法[J]. 振动与冲击, 2013, 32(11): 25-29

MEN Yu-zhuo YU Hai-bo HAN Yu. New method of automotive reliability test correlated with customers based on output energy of powertrain[J]. Journal of Vibration and Shock, 2013, 32(11): 25-29