Validation of a FTIR Spectroscopy Method for Measuring and Monitoring Fuel Dilution in Lubricating Oils

A FT-IR based fuel dilution analysis system was validated for long term reliability and precision. Frequency shift and spectral reproducibility tests showed that the instrument could operate for up to 10 months without maintenance. Changes in ambient temperature and humidity levels and the proximity...

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Bibliographic Details
Main Authors: Akochi-Koble, E, Pelchat, M, Pinchuk, D, Pinchuk, J, Dwight, Stephen
Format: Report
Language:English
Subjects:
ALGORITHMS
Atomic and Molecular Physics and Spectroscopy
CALIBRATION
COAT(CONTINOUS OIL ANALYSIS AND TREATMENT)
DILUTION
FOREIGN REPORTS
FOURIER SPECTROSCOPY
FUEL DILUTION ANALYSIS
FUELS
GAS CHROMATOGRAPHY
HUMIDITY
INFRARED SPECTROSCOPY
INSTRUMENTATION
Lubricants and Hydraulic Fluids
LUBRICATING OILS
MONITORING
MULTIVARIATE ANALYSIS
OIL ANALYSIS
TEMPERATURE
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Summary:A FT-IR based fuel dilution analysis system was validated for long term reliability and precision. Frequency shift and spectral reproducibility tests showed that the instrument could operate for up to 10 months without maintenance. Changes in ambient temperature and humidity levels and the proximity to mechanical and acoustic noise generators did not affect the performance of the instrument. This was accomplished due to the methodic analytical procedures, data analysis and isolation devices developed and employed. The system was calibrated using actual used oils and fuel dilution values determined by the standard ASTM Gas Chromatography method. The calibration model developed with multivariate algorithms was able to predict fuel in SAE 30, 40, 50 and Mil-L-9000 engine oils down to 0.4% dilution. Prepared in cooperation with the Department of Food Science and Agricultural Chemistry, McGill University, Ste Anne de Bellevue, Que. Canada, Dwight Analytical Solutions Toronto, Ont. Canada, Naval Engineering Test Establishment Ville LaSalle, Que. Canada.