Effect of engine oil oxidizability on tendency to form varnish deposits

Shimonaev, G. S.; Papok, K. K.; Penchul, A. F.; Zakharov, G. V.; Петрова, Н. И.

doi:10.1007/bf00719108

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2012

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“…These tests aim to select the proper base oil and additive for formulating a lubricant for a particular service and determining whether or not the used fluid is fit for continued use. Several studies generally agree that different oxygen‐containing products either in molecular form or free radicals are produced during oxidation mechanism. A number of inverse gas chromatographic studies have been made on lubricating oil oxidation…”

Section: Introductionmentioning

confidence: 93%

Inverse gas chromatographic study of the oxidation stability of lubricating base oil via linear solvation energy relationship

Moustafa

Eissa

Mahmoud

2012

Lubrication Science

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Linear solvation relationship was used as a new approach to follow the oxidation steps of both naphthenic and paraffinic base oils and to compare the resistances of both oils against oxidation. The obtained results demonstrate that the values of solvation of both oils change approximately linearly with the oxidation time at constant temperature. It was found that the values of the constants change by a faster rate on oxidation of the naphthenic base oil compared with their rate of change of paraffinic oil oxidation. The changed values of solvation constants during the course of oxidation can be used to follow the initiation, propagation and termination oxidation steps. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 93%