Some rheological properties of new and used mineral lubricant and biolubricant for tractors
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Kuupäev
2019
Kättesaadavus
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Abstrakt
It is important to know physical characteristics of lubricating oils to ensure the highest
reliability for operation of device. The use of ecological lubricants depends on their
characteristics; the most important are density and viscosity, protection against wear and tear,
corrosion resistance etc. The objective of this work was to find changes of the rheological
properties of the synthetic oil and bio lubricant. We compared two different oils in our
measurements. One sample was synthetic oil and the other was mineral oil (bio lubricant). Both
oils are universal oils for tractors. Further, comparison of new and used sample after million
cycles was performed. The density and the dynamic viscosity show strong exponentially
decreasing dependence. With the increasing temperature, values of the both properties, decreased.
It can be also observed that used samples have lower viscosity and density. The results presented
in this article can be important when putting ecological lubricants into operation.
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Article
Märksõnad
dynamic viscosity, density, ecological oil ertto, fluidity, kinematic viscosity, mineral oil ultra, articles