Turbocharger with improved roller bearing shaft support

Details Turbocharger with improved roller bearing shaft support Turbocharger with improved roller bearing shaft support

1989-12-12

1991-10-08

Casaregola, Louis J.

Pumps

Motor driven

Fluid motor

384476, F04B 1700

Patent

active

050550098

ABSTRACT:
An exhaust gas driven turbocharger includes a housing, and a shaft rotatably supporting a compressor wheel and a turbine wheel for rotation within the housing. A cartridge ball bearing assembly supports the shaft for rotation relative to the housing and includes a bearing outer ring, a bearing inner ring, and roller bearing elements supporting the inner ring for rotation relative to the outer ring. The inner ring is mounted on the shaft by axially spaced faying surfaces, the length of which are controlled to minimize heat transfer from the shaft to the bearing assembly while assuring the necessary stiffness of the assembly.

REFERENCES:
patent: 2938659 (1960-05-01), Judson et al.
patent: 4122673 (1978-10-01), Leins
patent: 4573808 (1986-03-01), Katayama
patent: 4652219 (1987-03-01), McEachern, Jr. et al.
patent: 4798523 (1989-01-01), Glaser et al.
patent: 4969805 (1990-11-01), Romeo
Miyashita et al., S.A.E. Technical Paper Series #870354, Development of High Efficiency Ball Bearing Turbocharger.

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