Automotive engine oil monitoring system

Details Automotive engine oil monitoring system Automotive engine oil monitoring system

1985-09-30

1987-07-07

Tokar, Michael J.

Measuring and testing

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

Vapor pressure

731173, G01N 3328

Patent

active

046778470

ABSTRACT:
The present invention describes a method and apparatus for monitoring and indicating engine oil deterioration during the period of the oil's useful life in an internal combustion engine. The system and method permits a determination of the rate of deterioration of the engine oil as a function of oil temperature or RPM of the engine and provides a continous output signal representing the remaining useful life of the oil which is provided to the driver when desired. The present invention therefore, estimates the time when the oil will reach an undesirable deterioration level during the course of operation of the engine rather than indicating, as many prior art systems, only when the oil reaches an undesirable level requiring an oil change.

REFERENCES:
patent: 2841201 (1957-12-01), Cotton
patent: 3049964 (1962-08-01), Miller et al.
patent: 3275808 (1966-09-01), Knudsen
patent: 4007629 (1977-02-01), Hochstein
patent: 4082511 (1978-04-01), Bedford
patent: 4311041 (1982-01-01), Reid et al.
patent: 4497200 (1985-02-01), Tournier

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