基于安全特性电子液压制动前后轴制动力分配改进方法

发布时间：2018-04-20 19:24

本文选题：电子液压制动 + 制动力分配　；参考：《汽车工程》2016年05期

【摘要】：为提高电子液压制动安全性能,本文中对前后轴制动力分配方法进行了改进。首先研究ECE R13制动法规对汽车前后轴制动力分配的影响,然后对电子液压制动安全特性进行分析,得到如下结论:电子液压制动中电机泵的作用频次与制动需液量成正比;输出相同的制动力矩的情况下,单独使用后轮制动器比单独使用前轮制动器需要更少的制动液体积;在低于某一制动强度时,共同使用前后轴制动器时制动需液量大于单独使用前轴制动器;利用单侧车轮的进/出液阀控制左右两侧车轮制动器实施制动,可以降低高速电磁阀的使用频次。最后基于上述结论提出了基于安全特性的电子液压制动的前后轴制动力分配改进方法,并进行NYCC循环工况的仿真。结果表明,与理想制动力分配方法相比,采用所提出的改进方法,电机泵和前轴进/出液阀的作用频次约降低50%,而后轴进/出液阀的使用频次降低90%。
[Abstract]:In order to improve the safety performance of the electronic hydraulic brake, this paper improves the power distribution method of the front and rear axle system in this paper. First, the influence of the ECE R13 braking law on the power distribution of the rear axle system is studied. Then the safety characteristics of the electronic hydraulic brake are analyzed. The following conclusions are obtained: the frequency and braking of the motor pump in the electric hydraulic brake. In the case of the same braking torque; with the same braking torque output, less brake fluid volume is required for using the rear wheel brake alone than using the front wheel brake alone; when the brake strength is lower than a certain brake strength, the amount of brake fluid for the common use of the front and rear axle brakes is greater than that of the single front axle brake; using the inlet / outlet valve control of the single wheel wheel. The brake of the left and right wheel brakes can be made to reduce the frequency of the high speed solenoid valve. Finally, based on the above conclusion, an improved method for the dynamic distribution of the front and back axes of the electronic hydraulic brake based on the safety characteristics is proposed and the simulation of the NYCC cycle is carried out. The results show that compared with the ideal braking force distribution method, the proposed method is proposed. With the improvement method, the frequency of the inlet and outlet valves of the motor pump and the front axle is reduced by about 50%, and the use frequency of the rear axle inlet / outlet valve is reduced by 90%.

【作者单位】：江苏大学汽车与交通工程学院;
【基金】：国家自然科学基金(51275212) 江苏高校优势学科建设工程和江苏省2014年度普通高校研究生科研创新计划项目(KYLX_1025)资助
【分类号】：U463.5

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