Influence of chemical composition of lubricating medium on friction and wear processes

Lashkhi, V. L.

doi:10.1007/bf00730783

Cited by 1 publication

(2 citation statements)

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“…4. This figure shows the plot of measured friction coefficient versus calculated friction coefficients using the mathematical models described by equations (8) to (10), respectively. They show a reasonable correlation between measured and calculated friction coefficient values.…”

Section: Selection Of Mathematical Modelmentioning

confidence: 99%

“…Until now, there has been no standard method to evaluate the boundary friction performance of the tribofilm. Models have been proposed for the quantitative prediction of how the nature of the lubricant affects certain tribological parameters such as friction force and the amount of wear by approximation of the probability of forming surface films depending on the friction regime [8]. Shibryaev et al [9] developed a mathematical model to determine the optimum ratio of additives for the formulation with the best tribotechnical properties.…”

Section: Introductionmentioning

confidence: 99%

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Friction modelling of tribofilm performance in a bench tribometer for automotive engine lubricants

Roshan

Priest

Neville

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part J:

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Research focusing on the initial stages of the development of an empirical model to predict friction in boundary and mixed lubrication conditions accounting for additive and surface interactions is reported in this article. The regression model was constructed by applying a fractional factorial design statistical approach. The model considers a typical friction modifier, molybdenum dithiocarbamate, in a model automotive engine lubricant also containing zinc dialkyldithiophosphate in a synthetic polyalphaolefin base oil under conditions representative of the cam and follower interface in an automotive engine. Operating temperature, sliding speed, load, initial surface roughness, and the initial lambda ratio were taken as the factors affecting tribological performance. The empirical model predicts friction at 95 per cent confidence level within the specific range of parameters considered in the experiments. Not surprisingly, molybdenum dithiocarbamate is mainly responsible for the reduction of friction of the tribofilm, whereas temperature, sliding speed, and load are the other significant parameters.

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Section: Selection Of Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%