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Effect of Graphene as a Lubricant Additive for Diesel Engines

Author

Listed:
  • Grzegorz Koszalka

    (Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland)

  • Eduardo Tomanik

    (Gerdau Graphene, Sao Paulo 05424-050, Brazil)

  • Thiago Marinho Maria

    (Kinix Consulting Ltda, Sao Paulo 04902-005, Brazil)

  • Wania Christinelli

    (Gerdau Graphene, Sao Paulo 05424-050, Brazil)

  • Wieslaw Grabon

    (Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, 35-959 Rzeszow, Poland)

Abstract

Two engine oil additives with graphene were tested in diesel engines. The first was a graphene oxide (GO)-based, commercially available additive that the supplier recommends using at a 3% v / v concentration in engine oil. The second was a graphene nanoplatelet (GNP)-based additive that is under development, which is more concentrated and allows for the addition of a much smaller amount of additive. Using the GO additive results in a reduction of brake-specific fuel consumption from 0.2% to 0.7%, depending on the engine load, and a 2% reduction in fuel consumption when the engine is run without load. The use of 0.1% wt of GNPs led to 0.4% of fuel savings on an ESC emission cycle. Increasing the GNP concentration to 0.2% did not further reduce fuel consumption.

Suggested Citation

  • Grzegorz Koszalka & Eduardo Tomanik & Thiago Marinho Maria & Wania Christinelli & Wieslaw Grabon, 2025. "Effect of Graphene as a Lubricant Additive for Diesel Engines," Energies, MDPI, vol. 18(2), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:2:p:257-:d:1563044
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