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US 2012/0022694 A1Published application
Chemical and physical degradation sensing in oil
AssigneeMridangam Research Intellectual Property Trust
InventorsPravansu S. Mohanty, Ramesh K. Guduru
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Abstract
A sensing scheme comprising determining the chemical degradation and physical degradation in oil using variation in transmission behavior of oil for multi-wavelength electromagnetic radiation, and separating the contributory effect of physical degradation from the chemical degradation is disclosed. Further sensor designs employing the said scheme are disclosed.
Claims20
A process for sensing oil degradation, the process comprising:
- irradiating a quantity of used oil with different wavelengths of electromagnetic radiation at a given intensity such that a first subset of wavelengths does not pass through the quantity of used oil and a second subset of wavelengths does pass through the quantity of used oil;
- determining at least one of a maximum wavelength of the first subset of wavelengths that does not transmit through the quantity of used oil and an amount of the electromagnetic radiation from the second subset of wavelengths that is transmitted through the quantity of used oil;
- and
- comparing at least one of the maximum wavelength of the first subset of wavelengths and the amount of transmitted electromagnetic radiation from the second subset of wavelengths to a standard maximum wavelength and a standard amount of transmitted electromagnetic radiation, respectively.
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A sensor for determining oil degradation, said sensor comprising:
- a multi-wavelength electromagnetic radiation source operable to emit multi-wavelength electromagnetic radiation;
- a multi-wavelength electromagnetic radiation detector spaced apart from said multi-wavelength electromagnetic radiation source;
- a transmission space between said multi-wavelength electromagnetic radiation source and said multi-wavelength electromagnetic radiation detector, said transmission space dimensioned for a quantity of oil to be located therebetween;
- and
- a microprocessor in electronic communication with said multi-wavelength electromagnetic radiation detector and operable to determine at least one of a minimum wavelength of electromagnetic radiation that has been emitted from said multi-wavelength electromagnetic radiation source and detected by said multi-wavelength electromagnetic radiation detector, a total amount of electromagnetic radiation transmitted through the quantity of oil and detected by said multi-wavelength electromagnetic radiation detector, a comparison of said minimum wavelength of electromagnetic radiation to a standard wavelength of electromagnetic radiation and a comparison of said total amount of electromagnetic radiation transmitted through the quantity of oil to a standard amount of electromagnetic radiation.
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Dependencies are inferred from the claim text.