| 摘要 |
PURPOSE:To achieve a labyrinth effect so that the capillarity may be prevented to prevent leaks of lubrication oil to the compressor side by causing a clearance between a thrust bushing and a seal plate to repeat expansion and contraction by forming an annular groove. CONSTITUTION:A passage 33 is connected to lubrication oil passages 37, 38 which are formed in a thrust bearing 26 to lubricate the interface of thrust plate 23 which rotate in unison with a rotor shaft 19, thrust spacer 24, thrust bushing 25 and thrust bearing 26. Two annular grooves 41, 42 in which seal rings 39, 40 are disposed are formed in the outer circumference of the thrust bushing 25, and an annular groove 43 is formed in the inner circumference of the seal plate 29 to prevent the lubrication oil for various parts of the thrust bearing 26 from leaking to the compressor wheel side 18. |
