Apparatus and method for determining the air entrainment charact

Details Apparatus and method for determining the air entrainment charact Apparatus and method for determining the air entrainment charact

1997-09-30

1999-10-12

Brock, Michael

Measuring and testing

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

73 1911, 73 5305, G01N 700, G01N 3326

Patent

active

059658053

ABSTRACT:
Described is an apparatus and a method to accurately determine the gas entrainment characteristics of liquids, such as automatic transmission fluids. The apparatus comprises a liquid reservoir, a conduit having an inlet and an outlet connected to the liquid reservoir so as to form a pressurized recirculating loop for the liquid in the liquid reservoir, a pump for moving the liquid through the conduit, and a means for admitting gas (such as air) into the conduit to aerate the liquid.

REFERENCES:
patent: 2406179 (1946-08-01), Walsh et al.
patent: 3381518 (1968-05-01), Loehle
patent: 4395902 (1983-08-01), Espenscheid et al.
patent: 4763514 (1988-08-01), Naito et al.
patent: 5243848 (1993-09-01), Cox et al.
G.E. Totten et al., "Hydraulic Fluids: Foaming, Air Entrainment, and Air Release--A Review" in SAE Technical Paper Series No. 972789, pp. 53-63 (International Off-Highway Powerplant Congress & Exposition, Sep. 8-10, 1997), reprint from Trend and Developments of Fluid Power for Off-Highway Applications.

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