Variable preload shaft bearing for turbocharger

Details Variable preload shaft bearing for turbocharger Variable preload shaft bearing for turbocharger

1986-03-11

1987-06-30

Footland, Lenard A.

Bearings

Rotary bearing

Hydraulic or pneumatic bearing support

384517, 384536, F16C 2506

Patent

active

046766677

ABSTRACT:
A rotating shaft of a turbocharger is supported by two rolling bearings enclosed in a bearing housing. Two collar members are interposed between the housing and bearings for supporting the bearings in the housing. A U-shaped preloading member is interposed between the two collar members in such a manner that the U-shaped member forms an oil chamber therein. The U-shaped member receives a pressure of a lubricating oil supplied to the oil chamber from an engine, and expands to puch the rolling bearings through the collar members with a greater force when the engine speed is high, and therefore, the oil pressure is high.

REFERENCES:
patent: 3716280 (1973-02-01), Leibensperger et al.
patent: 3738719 (1973-06-01), Langner
patent: 4342488 (1982-08-01), Anderson et al.
patent: 4400098 (1983-08-01), Lacey

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