Journal bearing simulator

Details Journal bearing simulator Journal bearing simulator

1988-08-15

1989-08-08

Levy, Stewart J.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Vapor pressure

73 10, G01N 3326

Patent

active

048541591

ABSTRACT:
A method and apparatus for measuring the load bearing capacity of engine oils under determined temperatures and shear rates. An eccentrically rotating cylindrical shaft (rotor) is used in a cylindrical journal bearing (stator) so arranged that the stator can be displaced from the center of rotation by a known amount. Measurements are made of minimum gap between the rotor and stator and of the force required to maintain the eccentrically rotating loaded shaft at a position such that the oil in the gap between rotor and stator achieves a shear rate between 1.times.10.sup.5 and 1.times.10.sup.7 s.sup.-1, typically 1.times.10.sup.6 s.sup.-1.

REFERENCES:
patent: 2114029 (1938-04-01), Perry
patent: 2337414 (1943-12-01), Rieber
patent: 2808563 (1957-10-01), Hornbostel
patent: 3714815 (1973-02-01), Hartert
patent: 3785196 (1974-01-01), Smith
patent: 4000656 (1977-01-01), Moioli
patent: 4267722 (1981-05-01), Hendry
Oliver, D. R., Rheol. Acta, 21, pp. 527-529 (1982).

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