Critical Speed Analysis of a Mixed-Flow Turbine Turbocharger in Hybrid Ceramic Ball Bearing
In view of the ball bearings having the advantage over floating bush bearings, that will been used in vehicle turbocharger widely. This paper describes the calculation and analysis methods of the critical speed for vehicle turbocharger. The critical speed is computed by two methods including Riccati transfer matrix and DyRoBeS finite element method for HP60Q Mixed-Flow Turbine turbocharger in Hybrid Ceramic Ball Beating for vehicle. The vibration experiment had been taken to validate the calculating result. The results by two calculation methods, compared with the test results show that the first critical speed discrepancy is 6.47％ and 2.87％, the second critical speed is 5.66％ and 2.94％ separately. The critical speed on different bearing rigidity and different turbine material had been computed and analyzed, so that we have get these factors how to effect on critical speed. And the conclusions will be helpful for the vehicle turbocharger bearing-rotor system design.
turbocharger critical speed hybrid ceramic ball bearing mixed-flow turbine
Huang Ruo Ge Xinbin Ma Chaochen Bijinguang Wang Liangzhen
School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, Chi Ningbo Tianli turbocharger Co., Ltd, Zhejiang 315032, China
国际会议
2007年(中国内燃机学会第六届学术年会暨国际内燃机学术研讨会和第六届中国国际内燃机及制造装备展览会)两会一展国际学术会议
上海
英文
82-87
2007-10-09（万方平台首次上网日期，不代表论文的发表时间）