Method for Determining the Reliable Life Parameter of Turbine Wheel of Turbocharger with Over-speed Failure Mode
For the over-speed failure mode, the method for determining the reliable life parameter of turbine wheel of turbocharger is proposed in this paper. The shortage of design criteria based on conventional safety factor for turbine wheel with over-speed failure mode is analyzed. In order to embody the characteristics of structure and over-speed failure mode, the turbine wheel is taken as a series system consisting of several blade symmetrical components in the reliability modeling process. The time-reliability models of turbine wheel are derived and the relationship between the reliability and failure rate of turbine wheel and life parameter is studied. Then, the method for determining the reliable life parameter of turbine wheel of turbocharger with over-speed failure mode is proposed based on the reliability model and reliability curve. As long as the design parameters including the number of blades, speed, stress, and strength are given, the reliable life of turbine wheel of turbocharger with over-speed failure mode can be determined with the method proposed.
Reliable life turbine wheel over-speed failure reliability turbocharger
WANG Zheng WANG A-na GUO Kai ZHUANG Li HUA Lin
China North Engine Research Institute, National Key Laboratory of Diesel Engine TurbochargingTechnol China North Engine Research Institute, National Key Laboratory of Diesel Engine Turbocharging Techno
国际会议
武汉
英文
251-255
2012-07-29（万方平台首次上网日期，不代表论文的发表时间）