摘要
针对某机型增压器隔热罩在整车和台架试验中开裂的问题,测试了隔热罩开裂区域在整车和台架上的实际温度值,结合隔热罩的耐温测试数据,找出了隔热罩开裂的原因;通过增大隔热罩与增压器之间的间隙以及优化隔热罩开裂区的结构,来降低了隔热罩内表面的温度和减少开裂区的应力集中点,从而解决了隔热罩开裂问题。
For the problem of cracked turbocharger heat shield in the whole vehicle and the bench test,test the actual temperature values of the heat shield’s cracked area on the vehicle and the bench,combine the heat resistance test of the heat shield,and find out the reason of the heat shield cracked;by increasing the space between heat shield and turbocharger and optimizing the heat shield structure,to reduce the temperature of heat shield’s internal surface and the stress concentration point in cracked area,and the heat shield cracking problem is solved.
作者
郑洲洋
吴卫钰
刘向峰
张彩霞
Zheng Zhouyang;Wu Weiyu;Liu Xiangfeng;Zhang Caixia(Ningbo Geely Royal Engine Components Co.,Ltd,Zhejiang Ningbo 315336)
出处
《汽车实用技术》
2020年第16期88-90,共3页
Automobile Applied Technology
关键词
隔热罩
开裂
实际温度值
间隙
应力集中点
Heat shield
Cracking
actual temperature
Space
Stress concentration point
