Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1982-10-18
1984-04-17
Krawczewicz, Stanley T.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
73 64, G01R 2726
Patent
active
044437544
ABSTRACT:
This invention relates to a method for determining the minimum oil-film thickness of a lubricating oil composition under engine operating conditions using selected electrical capacitance means wherein a potential relating to the capacitance is developed across an electrically isolated bearing and crankshaft, said capacitance being converted through a derived formula to the minimum oil-film thickness at the particular time the potential is being applied.
REFERENCES:
patent: 3182255 (1965-05-01), Hopkins
patent: 3227951 (1966-01-01), Dykaar
patent: 3331019 (1967-07-01), Irwin
"Engine Diagnosis Systems Developed by Fiat Research Center", Fiat Research Center Brochure, 1980.
S. L. Moore, "Measurement of the Ring to Linear Oil Film Thickness in Caterpillar 1-G Diesel Engine" in SAE Paper No. 790730, (1979), pp. 1-12.
S. L. Moore, "Piston Ring Lubrication in a Two-Stroke Diesel Engine" in Wear, 72 (1981), pp. 353-369.
K. Ninomiya et al., "Electrical Observation of Lubricant Film Between a Cam and a Lifter of an OHV Engine," SAE Paper No. 780930, (1978), pp. 1-10.
Exxon Research and Engineering Co.
Krawczewicz Stanley T.
Solis Jose M.
Zagarella, Jr. Eugene
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