Diagnosis of lubricating oil by evaluating cyanide and carbon molecular emission lines in laser induced breakdown spectra

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DOIResolve DOI: http://doi.org/10.1016/j.sab.2011.06.001
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TypeArticle
Journal titleSpectrochimica Acta - Part B Atomic Spectroscopy
ISSN0584-8547
Volume66
Issue8
Pages588593; # of pages: 6
SubjectChemical conditions; CN and C <sub>2</sub>; Engine failures; Engine oil; Intensity values; Laser induced breakdown; Molecular band; Molecular emissions; Motor oil; Protective properties; Spectral emission; Cyanides; Electromagnetic wave emission; Lubrication; Lubricating oils
AbstractTo prevent engine failure it is essential to change lubricating oil regularly before it loses its protective properties. It is also necessary to monitor the physical and chemical conditions of the oil to reliably determine the optimum oil-change intervals. The present work focuses on studying evolution of the cyanide (CN) and carbon (C 2) molecular spectral emission lines in the laser induced breakdown spectra of lubricating oil as a function of its consumption. The intensities of these molecular bands have been taken as indicator of engine oil degradation at certain mileage. Furthermore, the percentage of decay of CN and C 2 integral intensity values at the corresponding mileage was calculated in order to relate it to the degree of consumption of the motor oil. Such percentage decay of the CN and C 2 integral intensities have been found to increase gradually with increasing mileage which is accompanied with increasing depletion of engine oil. The results of using LIBS technique in the present measurements proved that it is possible to have a direct, straightforward and easy method for prediction of lubricating oil degree of consumption. This may facilitate scheduling the proper time and/or mileage intervals for changing the oil to avoid any possibility of engine failure. © 2011 Elsevier B.V. All Rights Reserved.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271726
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Record identifiere20a6259-288f-487e-b299-9bec47ebc12d
Record created2014-03-24
Record modified2016-05-09
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