Turbocharger bearing retention and lubrication system

Pumps – Motor driven – Fluid motor

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Details

184 611, 384906, F04B 1700

Patent

active

050767666

ABSTRACT:
A turbocharger includes a rotating shaft which is supported within the turbocharger center housing by rotational bearing elements. The bearing cartridge is located axially within the housing 14 by a pin which extends through orifices drilled in the center housing and in the bearing outer ring. The pin is relatively smooth, so that excursions of the bearing cartridge assembly with the shaft is permitted when the shaft is accelerated through critical rotational speeds. These excursions are damped by lubricating fluid communicated into grooves circumscribing the bearing outer ring through lubrication passages extending through the pin. The lubricating fluid in the grooves communicates into the intersticial space defined between the outer ring of the bearing cartridge assembly and the center housing to thereby dampen the excursions of the bearing cartridge assembly.

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patent: 4789253 (1988-12-01), Perego
patent: 4798523 (1989-01-01), Glaser et al.
patent: 4943170 (1990-07-01), Arda

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