Bearings – Rotary bearing – Plain bearing
Patent
1989-05-02
1990-02-20
Footland, Lenard A.
Bearings
Rotary bearing
Plain bearing
384 99, 384287, 384551, 384901, F16C 1718
Patent
active
049021443
ABSTRACT:
An improved bearing assembly is provided for axially retaining journal bearings in a turbocharger. The turbocharger includes a center housing having an elongated bearing bore for receiving an axially spaced pair of journal bearings which in turn support a rotatable turbocharger shaft. Lubricating oil is supplied through the center housing for passage to the shaft-bearing interface through radially open oil flow ports formed in the journal bearings. A bearing spacer is interposed axially between the journal bearings such that the opposite ends of the bearing spacer define a pair of thrust surfaces for engaging and locating the axially inboard faces of the journal bearings. Additional thrust surfaces are formed on thrust members carried by the turbocharger shaft to engage and locate the axially outboard faces of the journal bearings. The outer diameters of these thrust surfaces are less than the outer diameter of the journal bearings to promote substantially unimpeded, axially bidirectional oil flow over and about the journal bearings.
REFERENCES:
patent: 3390926 (1968-07-01), Woollenweber
patent: 4358253 (1982-11-01), Okano et al.
patent: 4364717 (1982-12-01), Schippers et al.
patent: 4427309 (1984-06-01), Blake
patent: 4605316 (1986-08-01), Utecht
patent: 4738548 (1988-04-01), Zloch et al.
Allied-Signal Inc.
Footland Lenard A.
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