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Review

Recent Advances in Preparation and Testing Methods of Engine-Based Nanolubricants: A State-of-the-Art Review

1
Department of Mechanical, Faculty of Engineering, The British University in Egypt, Cairo 11837, Egypt
2
Mechanical Engineering and Design, School of Engineering, London South Bank University, London SE1 0AA, UK
*
Author to whom correspondence should be addressed.
Lubricants 2021, 9(9), 85; https://doi.org/10.3390/lubricants9090085
Received: 28 April 2021 / Revised: 24 June 2021 / Accepted: 26 June 2021 / Published: 27 August 2021
Reducing power losses in engines is considered a key parameter of their efficiency improvement. Nanotechnology, as an interface technology, is considered one of the most promising strategies for this purpose. As a consumable liquid, researchers have studied nanolubricants through the last decade as potential engine oil. Nanolubricants were shown to cause a considerable reduction in the engine frictional and thermal losses, and fuel consumption as well. Despite that, numerous drawbacks regarding the quality of the processed nanolubricants were discerned. This includes the dispersion stability of these fluids and the lack of actual engine experiments. It has been shown that the selection criteria of nanoparticles to be used as lubricant additives for internal combustion engines is considered a complex process. Many factors have to be considered to investigate and follow up with their characteristics. The selection methodology includes tribological and rheological behaviours, thermal stability, dispersion stability, as well as engine performance. Through the last decade, studies on nanolubricants related to internal combustion engines focused only on one to three of these factors, with little concern towards the other factors that would have a considerable effect on their final behaviour. In this review study, recent works concerning nanolubricants are discussed and summarized. A complete image of the designing parameters for this approach is presented, to afford an effective product as engine lubricant. View Full-Text
Keywords: nanotechnology; engine-based nanofluids; energy saving; engine performance nanotechnology; engine-based nanofluids; energy saving; engine performance
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MDPI and ACS Style

Akl, S.; Elsoudy, S.; Abdel-Rehim, A.A.; Salem, S.; Ellis, M. Recent Advances in Preparation and Testing Methods of Engine-Based Nanolubricants: A State-of-the-Art Review. Lubricants 2021, 9, 85. https://doi.org/10.3390/lubricants9090085

AMA Style

Akl S, Elsoudy S, Abdel-Rehim AA, Salem S, Ellis M. Recent Advances in Preparation and Testing Methods of Engine-Based Nanolubricants: A State-of-the-Art Review. Lubricants. 2021; 9(9):85. https://doi.org/10.3390/lubricants9090085

Chicago/Turabian Style

Akl, Sayed, Sherif Elsoudy, Ahmed A. Abdel-Rehim, Serag Salem, and Mark Ellis. 2021. "Recent Advances in Preparation and Testing Methods of Engine-Based Nanolubricants: A State-of-the-Art Review" Lubricants 9, no. 9: 85. https://doi.org/10.3390/lubricants9090085

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