An experimental investigation of the viscosity of graphene-engine oil: The impact of temperature and concentration of nanoparticles

  • Unique Paper ID: 162286
  • Volume: 10
  • Issue: 9
  • PageNo: 90-97
  • Abstract:
  • This experimental study delves into the rheological properties of graphene-engine oil nanofluids, focusing on the effects of temperature and nanoparticle concentration. The aim is to enhance the understanding of how graphene (Gr), as a nanoparticle additive, influences the viscosity of engine oil under various conditions. The study systematically investigates the viscosity changes in engine oil with varying concentrations of graphene nanoparticles (0.1%, 0.5%, 1.0%, and 2.0% by weight) across a temperature range of 5°C to 65°C, focusing on enhancing the thermal and lubrication properties of the base oil. Graphene, a single layer of carbon atoms arranged in a two-dimensional honeycomb lattice, is renowned for its exceptional thermal conductivity, mechanical strength, and electrical conductivity. The Anton Paar MCR 302 Rheometer series was used to do the measurements. Correlations were proposed using the experimental data to estimate the dynamic viscosity of Graphene-engine oil at various temperatures. The outcomes of the experiment at various shear rates demonstrated that every nanofluid sample behaves in a Newtonian manner. The findings also showed that as the solid volume percentage rises, the nanofluid's viscosity does as well. Additionally, it has been discovered that the viscosity of nanofluids reduces with temperature, becoming more palpable at lower temperatures. Theoretical models were shown to be unable to accurately predict the viscosity values of the nanofluids at all solid volume fractions when compared to experimental observations. The results of the experiment also showed that the nanofluid's 48% more viscosity enhancement above the base fluids was.

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