Real time durability of tribofilms in the piston ring – cylinder liner contact

Spiller, S.; Lenauer, Claudia; Wopelka, Thomas; Jech, Martin

doi:10.1016/j.triboint.2016.12.002

Cited by 17 publications

(25 citation statements)

References 42 publications

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“…Finding the appropriate thicknesses that presented a higher performance in the system. On the other hand [49] carry out a study on the duration and control of tribofilm formation, and the behavior of common additives in this type of scenario. Table 8 lists a set of investigations that implemented this type of tribometer, where it can see the similarity of the test conditions and how some report the speed of the test or the frequency of the cycle as this is a reciprocating type tribometer.…”

Section: Ivvii Ring Piston Tribometer -Cylindermentioning

confidence: 99%

TRIBOMETRY: How is friction research quantified? A review

Valdes¹,

Marín²,

Rodriguez-Cabal³

et al. 2020

International Journal of Engineering Research and Technology

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Section: Ivvii Ring Piston Tribometer -Cylindermentioning

confidence: 99%

TRIBOMETRY: How is friction research quantified? A review

Valdes¹,

Marín²,

Rodriguez-Cabal³

et al. 2020

International Journal of Engineering Research and Technology

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“…This delamination of the tribofilm resulted in the unsteady state of friction. 61,62 Given all that, it can thus be interpreted from the surface morphologies that the hybrid state of adhesive and abrasive wear is the dominating wear mechanism in EP lubrication sliding.…”

Section: Surface Analysismentioning

confidence: 99%

Tribological behavior of chrome-deposited SAE9254 grade steel top compression piston ring under lubrication starvation and mild extreme pressure lubrication

Syed

Wàňi

2019

International Journal of Engine Research

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This article reports tribological studies of piston ring/cylinder liner tribo-contact to evaluate the scuffing failure under dry sliding conditions and its minimization with mild extreme pressure lubrication. The tribological conjugation tested employs a piston ring of SAE9254 grade steel substrate with plasma-sprayed chromium coating of 42 µm and ISO R185220 grade gray cast iron cylinder liner. A conformal, cylinder inscribed in cylindrical cavity contact was ensured to simulate actual dead center reciprocating between piston ring–cylinder liner interface. Tribotests were conducted under dry sliding, simulating lubrication starvation and sliding in extreme pressure additivation blend at a temperature of 200 °C with 10 mm stroke length and reciprocating velocity of 0.2 m s–1. The friction characteristics of the piston ring and cylinder liner samples in cited test conditions were studied as a function of load and continuously monitored throughout the tests. Optimal profilometry was employed for evaluating wear attributes. For surface morphology and allied surface characterization, energy-dispersive X-ray spectroscopy integrated scanning electron microscopy was used. For tribo-chemical interactions and film formation, the tribo-surfaces were further investigated with Raman spectroscopy. ASTM E-384 standard Vickers indentation microhardness and its precedence to tribological characteristics were evaluated. The extreme pressure lubrication is intended to potentially improve the scuffing résistance and optimization of coating material in achieving superior tribological characteristics. Superior lubricity, scuffing resistance and enhanced load-bearing capacity attributes were manifested by EP-PAO10 blend lubrication contrasting the surface deteriorations and scuffing failure ascribed to dry sliding.

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“…The wear protection and the endurance of the tribofilm for piston ring and cylinder liner have been explored by S. Spiller et al. [19]. They reported that lower wear rate and friction coefficient established in case of carbon-rich tribofilm compared to tribofilms with extra basics additive.…”

Section: Introductionmentioning

confidence: 99%

Effect of cylinder-liner rotation on wear rate: An experimental study

Musmar

Al-Rousan

Tlili

2019

Heliyon

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In rotating cylinder-piston system, the largest losses source is frictional losses, accounting for 50% of the total frictional losses, thus it is important to optimize. Effect of incremental rotation of a cylinder liner on its wear rate was investigated. The engine speed, load and the cylinder rotating angle were the main parameter. The results showed that the wear rate may be reduced to the half simply by rotating cylinder liner every six hours’ time interval of working. The test was carried out in pairs using a piston cylinder with movable liner and compared to a standard cylinder liner (fixed liner). Angles of 60 o , 120 o , 180 o , 240 o , and 300 o were used for incremental movement. The same operating conditions for two cylinders were maintained for the purpose of comparison. Beneficial effects of reducing the wear rate for all components of the piston-cylinder arrangement associated with incremental rotational movement of a cylinder linear were noticed. A decrease in wear rate was obvious in the cylinder liner in rotation angles of 120 o and 240 o and it is almost one-fourth of the wear that occurs in the stationary cylinder liner.

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Real time durability of tribofilms in the piston ring – cylinder liner contact

Cited by 17 publications

References 42 publications

TRIBOMETRY: How is friction research quantified? A review

TRIBOMETRY: How is friction research quantified? A review

Tribological behavior of chrome-deposited SAE9254 grade steel top compression piston ring under lubrication starvation and mild extreme pressure lubrication

Effect of cylinder-liner rotation on wear rate: An experimental study

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