The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2007
Filed:
Oct. 18, 2002
Paul Thomas Reischman, Lambertville, NJ (US);
Rafi Jalkian, Gibbstown, NJ (US);
Paul Thomas Reischman, Lambertville, NJ (US);
Rafi Jalkian, Gibbstown, NJ (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
A method for determining contamination in marine diesel lubricating oils. The method has been found to have particular utility in estimating residual fuel and insolubles contamination in marine diesel lubricating oils. The method includes the steps of: (a) obtaining spectral raw data over a frequency range substantially equivalent to that of ultraviolet-viable light for reference lubricating oil samples with known properties and concentrations of residual fuel and insolubles; (b) performing chemometric techniques to the spectral raw data obtained in step (a) to develop a calibration model and calibrate the spectral data with actual values for parameters reflecting the level of residual fuel and insolubles contamination of the reference samples, the actual values determined by means of conventional analytical methods; (c) obtaining spectra of samples of marine diesel lubricating oil of unknown concentration of residual fuel and insolubles over a frequency range substantially equivalent to that of ultraviolet-viable light; and (d) processing the obtained spectral raw data of step (c) and applying the developed calibration model to the processed data in order to determine the parameters reflecting the level of residual fuel contaminants and insolubles present in the marine diesel lubricating oil.