某越野车顶盖密封性能特征分析与优化  

Optimization and Analysis of Sealing Performance in the Area of Roof Panel for the Off-road Vehicle

作　　者：赵博文 王晶琦[1] 张琪 郑凯 张璞 丁祖学 ZHAO Bowen;WANG Jingqi;ZHANG Qi;ZHENG Kai;ZHANG Pu;DING Zuxue(Baic Group Off-road Vehicle Co.,Ltd.,Beijing 101300;The College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124)

机构地区：[1]北京汽车集团越野车有限公司,北京101300 [2]北京工业大学材料科学与工程学院,北京100124

出　　处：《汽车实用技术》2022年第2期27-32,共6页Automobile Applied Technology

摘　　要：解决整车的淋雨密封性问题是整车研发、制造过程中的一个系统性、复杂性的工程,然而目前密封的机理与解决方法尚不完善。基于此,文章介绍了一种越野车型漏水问题的研究方法与解决思路,提出了动态水流路径分析法与DOE实验设计结合的策略。对车身结构、相关零部件的密封性能进行分析评估,确定异常水流路径及影响因子,通过正交实验以及均值分析得到最优化的密封条唇边降低高度、硬度、长度参数,并在批量生产过程中进行充分的验证,改善了顶盖间密封系统,将整车的淋雨一次通过率从62.5%提高至99.3%。Among the process of automobile R&D and manufacturing,the issues of water sealing system is always complex and confused.There is not effective solution to this problem and sealing mechanism is still unclear.Based on the way of flow paths analysis,the route of leak water,body structure and water tightness of parts are widely studied.Furthermore,the relative importance of the three design parameters is investigated using design of experiment(DOE)method for each response.Here,by optimization of the size and hardness of the rubber seals,the rain test rate has much improved from 62.5%to 99.3%.

关 键 词：越野车 漏水 动态水流路径 DOE 

分 类 号：U467[机械工程—车辆工程]