Study on the Seal Leakage of Turbocharger

摘要：

Piston ring sealing is commonly applied to turbocharger, so there must be some gas leakage due to the non-contact sealing when operating. However, excess leakage will affect the normal operation of turbocharger and engine. In this paper, the computation and the calibration methods of gas flow for the piston ring sealing are described. The numerical simulation which uses the wellorthogonalized hexahedral grid is carried out in the CFD software STAR-CD. It shows that the numerical simulation results fit well with the test results. The computation and test results also show that the side clearance is the determining parameter that affects the leakage rate of double piston ring sealing. Through the study of the position of piston ring in the ring slot on the leakage rate and the measurement of axial displacement of the rotor when operating, the correlation of the computation results and the test results is analyzed. In the seal leakage test, different conditioning ways of turbocharger operating points will greatly affect the measurement of leakage rate.

关键词： turbocharger piston ring sealing gas leakage

作者: Hong He Siyou Xu Ruiqian Yan Jianbo Ji

作者单位: National Key Lab. of Diesel Engine Turbo-charging Tech. P.O.B 22, Datong 037036, China

会议类型: 国际会议

会议名称: The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)

会议地点: 北京

会议语种:英文

页码: 234-237

在线出版日期: 2008-11-25（万方平台首次上网日期，不代表论文的发表时间）