Oil quantity and quality indicator

Details Oil quantity and quality indicator Oil quantity and quality indicator

1997-05-23

2000-07-18

Kim, Robert H.

Optics: measuring and testing

Oil testing

356301, G01N 3328

Patent

active

06091484&

ABSTRACT:
Method for monitoring oil state which combines optical transmissivity of oil with certain kinds of optoelectrical optodetector. In particular, the oil state in automatic gearboxes is monitored to detect lack of oil quantity or quality and, furthermore, to detect malfunction of gearbox mechanisms. A region of the oil is scanned with infrared oil and the amount of light reaching straight accross a short gap in said region is detected to derive monitoring information.

REFERENCES:
patent: 3417250 (1968-12-01), Kadivnik
patent: 3892485 (1975-07-01), Merritt et al.
patent: 5076397 (1991-12-01), Yamada
patent: 5194910 (1993-03-01), Kirkpatrick, Jr. et al.
patent: 5196898 (1993-03-01), Tamura et al.
patent: 5296843 (1994-03-01), Wohlstein et al.
patent: 5691701 (1997-11-01), Wohlstein et al.

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