Method and apparatus for measuring oil aeration of an engine

Details Method and apparatus for measuring oil aeration of an engine Method and apparatus for measuring oil aeration of an engine

2006-10-31

2006-10-31

Dolinar, Andrew M. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C702S050000, C073S019110

Reexamination Certificate

active

07130738

ABSTRACT:
A density ρ0of pure oil and a density ρaof air are calculated based on a measured oil pressure P and a measured oil temperature T of an oil line connecting a hydraulic pump of an engine and an oil gallery of a cylinder block, and then oil aeration is calculated based on a measured oil density {overscore (ρ)}, the measured oil pressure P, the calculated density ρ0of the pure oil, and the calculated density ρaof the air.

REFERENCES:
patent: 5295083 (1994-03-01), Yano et al.
patent: 6585938 (2003-07-01), Machida et al.
patent: 2858056 (2005-01-01), None
patent: WO 93/08457 (1993-04-01), None
Porot, “Un Nouveau Moyen de Mesure Absolue du Taux Gazeux des Mélanges Gaz-Liquides: Le SMAC,”Revue de L'Institut Francais de Petrole(1995) 50(6)807:819.
Porot et al., “The SMAC, Under Pressure Oil Aeration Measurement System in Running Engines,” SAE International Spring Fuels & Lubricants Meeting, Paris, Jun. 2000.

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