Method and apparatus for sensing the condition of lubricating oi

Details Method and apparatus for sensing the condition of lubricating oi Method and apparatus for sensing the condition of lubricating oi

1986-12-22

1988-03-29

Levy, Stewart I.

Measuring and testing

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

Vapor pressure

340631, G01N 3330

Patent

active

047335564

ABSTRACT:
An on-board sensor system which compares the dielectric properties of lubricating oil in an internal combustion engine with the dielectric properties of unused oil in a contained volume and providing an output signal indicative of the changes in viscosity correlated to the dielectric constant changes of the lubricating oil.

REFERENCES:
patent: 3971250 (1976-07-01), Taylor
patent: 4007629 (1977-02-01), Hochstein
patent: 4122707 (1978-10-01), Leunig
patent: 4344322 (1982-08-01), Plapp
patent: 4377851 (1983-03-01), McNamara
patent: 4414847 (1983-11-01), Kohama et al.
patent: 4443754 (1984-04-01), King
patent: 4646070 (1987-02-01), Yasuhara et al.

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