An Experimental Investigation on Rheological and Heat Transfer Performance of Hybrid Nanolubricant and Its Effect on the Vibration and Noise Characteristics of an Automotive Spark-Ignition Engine

Bharath, Bhavin K.; Selvan, V. Arul Mozhi

doi:10.1007/s10765-020-02784-8

Cited by 16 publications

(8 citation statements)

References 78 publications

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“…On the contrary, TiO 2 showed a fragile colloidal stability even when a surface-active agent was used to enhance their dispersion [112]. Figure 22 [56]. Adapted with permission.…”

Section: Discussionmentioning

confidence: 99%

“…Hence, reducing the mechanical losses and fuel consumption as well. In another recent study by Bharath [56], vehicle noise pollution and vibrational characteristics were measured. The study was conducted for the hybrid nanolubricant of ZnO/ TiO , with a real automotive engine test.…”

Section: Fuel Economy and Emissionsmentioning

confidence: 99%

“…On the other hand, there are many disagreements between the experimental data and theoretical predictions, regarding the tribological and rheological characteristics [37,47,48,189]. Further, there is a need for more real engine bench and road tests that have to cover the actual working conditions of these nanolubricants [56,70].…”

Section: Future Directions and Challengesmentioning

confidence: 99%

“…In a recent study by Bharath [56], the cost estimation of a hybrid ZnO/TiO 2 enginebased nanolubricant had been conducted. The total fabrication cost, including preparation, nanoparticle, and surface modification expenditures, was found to be around 25% more than the retail market price of the 5W-30 base oil.…”

Section: Cost and Economics Of Nanolubricantsmentioning

confidence: 99%

“…Figure22. Noise level reduction for engine-based nanolubricant[56].Figure22. Noise level reduction for engine-based nanolubricant[56].…”

mentioning

confidence: 99%

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

et al. 2021

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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.

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“…On the contrary, TiO 2 showed a fragile colloidal stability even when a surface-active agent was used to enhance their dispersion [112]. Figure 22 [56]. Adapted with permission.…”

Section: Discussionmentioning

confidence: 99%

Section: Fuel Economy and Emissionsmentioning

confidence: 99%