Friction Reduction Benefits in Valve-Train System Using IF-MoS<sub>2</sub>Added Engine Oil

Sgroi, Mauro Francesco; Grassi, Flavia; Mangherini, Davide; Lahouij, Imène; Dassenoy, Fabrice; García, Ignacio; Odriozola, Ibon; Kraft, Gerhard

doi:10.1080/10402004.2014.960540

Cited by 66 publications

(50 citation statements)

References 10 publications

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“…However, the production of the above additives creates a potential environmental problem due to hazardous emissions such as H 2 S and phosphorus, as well as sludge obtained during purification. Recent environmentally friendly regulations advocate for low-phosphorus or phosphorus-free industrial lubricants [10]. Lubricant additives were extensively studied in the past few years, such as MoS 2 nanosheets [11], MoS 2 nanotubes [12], fullerene-like MoS 2 [13], and grapheme [14].…”

Section: Introductionmentioning

confidence: 99%

The Application of Nano-MoS2 Quantum Dots as Liquid Lubricant Additive for Tribological Behavior Improvement

Guo

Peng

et al. 2020

Nanomaterials

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Molybdenum disulfide quantum dots (MoS2 QDs) are a promising lubricant additive for enhanced engine efficiency. In this study, MoS2 QDs were used as lubricating oil additives for ball-on-disc contact and had adequate dispersity in paroline oil, due to their super small particle size (~3 nm). Tribological results indicate that the friction coefficient of paroline oil with 0.3 wt.% MoS2 QDs reached 0.061, much lower than that of pure paroline oil (0.169), which is due to the formation of a stable tribo-film formed by the MoS2, MoO3, FeS, and FeSO4 composite within the wear track. Synergistic lubrication effects of the tribo-film and ball-bearing effect cooperatively resulted in the lowest friction and wear.

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Section: Introductionmentioning

confidence: 99%

The Application of Nano-MoS2 Quantum Dots as Liquid Lubricant Additive for Tribological Behavior Improvement

Guo

Peng

et al. 2020

Nanomaterials

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“…The TAA and Na 2 S produced H 2 S via hydrolyzation in acid solutions, and the resultant H 2 S reacted further with Na 2 MoO 4 to form the MoS 3…”

Section: Synthesis Of Mos 2 Nanoparticlesmentioning

confidence: 99%

“…Thus, m-MoS 2 could not remarkably improve the wear resistance of LBG and LCBG under the selected testing conditions. However, the relatively weak Mo peak at 235.7 eV occurred in the XPS spectrum of the disc lubricated by PBG with m-MoS 2 in Figure 11A, which was ascribed to Mo 3d3/2 of -Mo (VI)-of MoO 3 24 produced by the tribochemical reactions of m-MoS 2 , PBG, air, and (Figures 9G and 10G). The Ca peaks in Figure 10H of LCBG were also sulfate (CaSO 4 ) and carbonate (CaCO 3 ).…”

Section: Xps Characterisationmentioning

confidence: 99%

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Tribological properties of 3 types of MoS₂ additives in different base greases

et al. 2017

Lubrication Science

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A tribological comparison was conducted among micro‐MoS2 (m‐MoS2), platelet‐like nano‐MoS2, and spherical nano‐MoS2 in lithium grease, lithium‐calcium grease, and polyurea grease, respectively. Micro‐MoS2 slightly improved the lubrication of the 3 greases. The 2 nano‐MoS2 samples had obvious superiority over m‐MoS2. The tribofilms produced by nano‐MoS2 contained MoS2 and MoO3. However, the tribofilms with m‐MoS2 did not contain Mo, or Mo only existed in the form of MoO3. The absence of MoS2 in tribofilms was the main reason for the poor lubrication of m‐MoS2 greases. Moreover, the improved lubrication of the spherical nano‐MoS2 greases than the platelet‐like nano‐MoS2 ones was ascribed to the lubricating superiority of the spherical structure to the platelet‐like one.

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“…[4][5][6][7] The most promising tribological properties were found in tungsten and molybdenum dichalcogenides with onion-like microstructures, known as inorganic fullerenes, and graphene derived materials. [8][9][10][11][12][13] Among them, graphene is a particularly promising candidate and it also possesses exceptional mechanical strength, 14 which is highly desirable for wear protection, as well as a potentially low cost of production. Because of their improved heat conductivity and promising lubricating properties, a number of studies on graphene-based nanolubricants have been recently published.…”

Section: Introductionmentioning

confidence: 99%

In vitro and environmental toxicity of reduced graphene oxide as an additive in automotive lubricants

et al. 2018

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Despite the ground-breaking potential of nanomaterials, their safe and sustainable incorporation into an array of industrial markets prompts a deep and clear understanding of their potential toxicity for both humans and the environment. Among the many materials with great potential, graphene has shown promise in a variety of applications; however, the impact of graphene based products on living systems remains poorly understood. In this paper, we illustrate that via exploiting the tribological properties of graphene nanosheets, we can successfully improve both the frictional behaviour and the anti-wear capacity of lubricant oil for mechanical transmission. By virtue of reducing friction and enhancing lubricant lifetimes, we can forecast a reduction in friction based energy loss, in addition to a decrease in the carbon footprint of vehicles. The aforementioned positive environmental impact is further strengthened considering the lack of acute toxicity found in our extensive in vitro investigation, in which both eukaryotic and prokaryotic cells were tested. Collectively, our body of work suggests that by the use of safe nanoadditives we could contribute to reducing the environmental impact of transportation and therein take a positive step towards a more sustainable automotive sector. The workflow proposed here for the evaluation of human and environmental toxicity will allow for the study of nanosized bare graphene material and can be broadly applied to the translation of graphene-based nanomaterials into the market.

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Friction Reduction Benefits in Valve-Train System Using IF-MoS₂Added Engine Oil

Cited by 66 publications

References 10 publications

The Application of Nano-MoS2 Quantum Dots as Liquid Lubricant Additive for Tribological Behavior Improvement

The Application of Nano-MoS2 Quantum Dots as Liquid Lubricant Additive for Tribological Behavior Improvement

Tribological properties of 3 types of MoS₂ additives in different base greases

In vitro and environmental toxicity of reduced graphene oxide as an additive in automotive lubricants

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Friction Reduction Benefits in Valve-Train System Using IF-MoS2Added Engine Oil

Cited by 66 publications

References 10 publications

The Application of Nano-MoS2 Quantum Dots as Liquid Lubricant Additive for Tribological Behavior Improvement

The Application of Nano-MoS2 Quantum Dots as Liquid Lubricant Additive for Tribological Behavior Improvement

Tribological properties of 3 types of MoS2 additives in different base greases

In vitro and environmental toxicity of reduced graphene oxide as an additive in automotive lubricants

Contact Info

Product

Resources

About

Friction Reduction Benefits in Valve-Train System Using IF-MoS₂Added Engine Oil

Tribological properties of 3 types of MoS₂ additives in different base greases