Bearing sealing system for turbo-supercharger - has additional seal which is operational under negative pressure difference

The turbo-supercharger has a bearing housing (1) which supports a shaft (3) which carries a compressor impeller (23) at one end and a turbine wheel at the other end. An oil seal (27) is fitted between the impeller and the oil sump. This seal prevents oil leaking out of the sump formed by the bearing...

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1. Verfasser: SCHITTLER, MICHAEL., 6800 MANNHEIM, DE
Format: Patent
Sprache:eng ; ger
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Zusammenfassung:The turbo-supercharger has a bearing housing (1) which supports a shaft (3) which carries a compressor impeller (23) at one end and a turbine wheel at the other end. An oil seal (27) is fitted between the impeller and the oil sump. This seal prevents oil leaking out of the sump formed by the bearing housing. A second seal (30) with a sealing (33), which can move in the axial direction, is fitted in an end wall of the bearing housing. This second seal is operational only when there is a negative pressure difference between the impeller housing and the bearing housing. USE - Turbo-superchargers.