Contribution on understanding the friction film development in the performance of a dry automotive clutch system

Fernandes, G.P.; Zanotto, Paulo Sérgio; Sinatora, Amilton

doi:10.1016/j.wear.2015.09.007

Cited by 18 publications

(17 citation statements)

References 60 publications

(61 reference statements)

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“…As it was presented in [1,2] the clutch friction material is a semimetallic, resin-bonded composite intended for heavy-duty commercial vehicles. It contains the most important constituents normally used in conventional automobile clutch systems, such as phenolic resins, organic, inorganic and metallic fibers, abrasives, lubricants and other ingredients.…”

Section: Methodsmentioning

confidence: 99%

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Correlation between the Developed Tribofilm in Dry Automotive Clutch Field Applications with those Reproduced at Laboratory by Using a Pinon- Disc Tribometer for Three Different Severity Conditions

GP¹,

PS²

2016

Adv Automob Eng

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Section: Methodsmentioning

confidence: 99%

“…The field applications were classified as sub-mild, mild and severe. More details can be finding in [2].…”

Section: Methodsmentioning

confidence: 99%

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Correlation between the Developed Tribofilm in Dry Automotive Clutch Field Applications with those Reproduced at Laboratory by Using a Pinon- Disc Tribometer for Three Different Severity Conditions

GP¹,

PS²

2016

Adv Automob Eng

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“…The tribological tests were performed in a lab using a pin-on-disc tribometer, and the PV levels employed were 3.08, 7.88, and 10.09 MPa¨ms´1, which were classified as sub-mild, mild, and severe by Fernandes et al [9].…”

Section: Methodsmentioning

confidence: 99%

“…Once the PV range overcome, the tribofilm failed, and COF levels sharply decreased while wear rate rose. Further investigations carried out by Fernandes et al [9], in which tribometer tests were made by removing the wear debris from the cast iron surface, led to the following conclusions: (1) The clutch system performance was controlled by the tribofilm development; (2) the COF and wear rate performance, tribofilm's thickness, morphologies and, chemical composition were strongly affected by the interfacial temperature; (3) the removal of wear debris resulted in the increase in COF, while wear rate decreased due to a less developed tribofilm, which might both reduce the abrasivity into interfacial contact and increase the thermal conductivity of the tribosystem.…”

Section: Introductionmentioning

confidence: 96%

The Role of Counter-Face Roughness on the Tribological Performance of a Clutch System Tested with a Pin-On-Disc Tribometer

Fernandes¹,

Zanotto²,

Sinatora

2016

Lubricants

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This study was a continuous investigation of the roles played by the tribofilm on dry automotive clutch system performance. Tribological experiments were performed by the addition of wear debris at the beginning of tribometer tests and by reducing the surface roughness of a cast iron counter-face. The initial surface conditions of cast discs were 0.2 and 1.2 µm. The pin-on-disc tests were carried out at three different PV levels: 3.08, 7.88, and 10.09 MPa¨ms´1, and the current results were correlated to those previously obtained in the standard tribometer procedure. When the wear debris was added into the tribosystem, the friction coefficient level dropped drastically while the assembly wear rate rose. In contrast, the modified cast discs provided a reduced wear rate of assembly and a higher and more stable friction coefficient level. These improvements were obtained in a severe condition where higher temperature levels were reached. For the tests with added debris, SEM observations revealed a more intense tribofilm development over the worn surfaces of the clutch friction material. The smoothest cast disc did not damage the developed tribofilms and maintained them more stably due to a reduction in contact area stresses at the highest tribometer test.

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Effect of In situ Synthesis on the Microstructure, Corrosion, and Wear Resistance of Fe-Based Amorphous–Nanocrystalline Coatings

et al. 2022

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Contribution on understanding the friction film development in the performance of a dry automotive clutch system

Cited by 18 publications

References 60 publications

Correlation between the Developed Tribofilm in Dry Automotive Clutch Field Applications with those Reproduced at Laboratory by Using a Pinon- Disc Tribometer for Three Different Severity Conditions

Correlation between the Developed Tribofilm in Dry Automotive Clutch Field Applications with those Reproduced at Laboratory by Using a Pinon- Disc Tribometer for Three Different Severity Conditions

The Role of Counter-Face Roughness on the Tribological Performance of a Clutch System Tested with a Pin-On-Disc Tribometer

Effect of In situ Synthesis on the Microstructure, Corrosion, and Wear Resistance of Fe-Based Amorphous–Nanocrystalline Coatings

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