Cylinder Bore Finishes and Their Effect on Oil Consumption

Hill, Stephen H.

doi:10.4271/2001-01-3550

Cited by 17 publications

(12 citation statements)

References 3 publications

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“…Aktualnie w procesach produkcyjnych obróbki powierzchni cylindrów dominuje kierunek procesu honowania konwencjonalnego wielostopniowego ze strukturą geometryczną powierzchni typu płasko wierzchołkowego "plateau", zbliżonej swoim obrazem jak i parametrami chropowatości do powierzchni po okresie docierania silnika [4,8].…”

Section: New Methods Of Cylinder Surface Formingunclassified

“…krzywej Abbotta (rys. Zmiana profilu chropowatości w kierunku powierzchni gładszych w strukturze geometrycznej powierzchni cylindrów oznacza powierzchnie charakteryzujące się mniejszymi parametrami chropowatości zarówno w strefi e "plateau" (Rpk < 0,3 μm) jak i również w strefi e struktury bazowej (Rk < 0,8 μm) i w strefi e zasobników olejowych (Rvk < 1,5 μm) [4,8,12].…”

Section: New Methods Of Cylinder Surface Formingunclassified

“…slide honing) polegający na zmianie kąta honowania α > 90 o (ok. 135 o ) [6,11,12], ments concerning of: -an oil consumption decrease, -legal regulations relating content of toxic components in exhaust gases and also CO 2 emission [1,14]. Currently, a multistage conventional honing process with a geometrical surface structure of fl at top-land "plateau" near with its image and roughness parameters to the surface after an engine running-in period are the dominating directions in manufacturing processes of the cylinder surface treatment [4,8].…”

Section: New Methods Of Cylinder Surface Formingmentioning

confidence: 99%

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New methods of internal combustion engine cylinder surface forming

Gruszka¹,

Suchecki²

2007

Combustion Engines

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This article comprises a description of methods of internal combustion engine cylinder machining including a description of traditional machining method and a description of some new machining methods – being in use in the motor industry. Special attention has been given to a laser beam treatment method. Results of cylinder surface structure examination after laser-beam treatment with an electron microscopy method and with the use of a scanning microscope have been always presented.

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Section: New Methods Of Cylinder Surface Formingunclassified

Section: New Methods Of Cylinder Surface Formingmentioning

confidence: 99%

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New methods of internal combustion engine cylinder surface forming

Gruszka¹,

Suchecki²

2007

Combustion Engines

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“…Many different honing processes were developed in order to reduce friction and wear in contact area between cylinder inner surface and ring or piston skirt regions [13,14]. Again, a compromise solution must be achieved in order to reduce LOC and keep friction and wear in an acceptable level.…”

Section: Cylinder Inner Surface Roughness Sensitivity Studymentioning

confidence: 99%

Lube Oil Consumption Simulation: Validation and Parametric Investigation

Pereira¹,

Bacchin²,

Zottin³

2014

Blucher Engineering Proceedings

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In order to better understand and control the engine lube oil consumption (LOC) during the engine development process, manufacturers request quantitative LOC estimations by numerical simulation. This paper presents a study performed by MAHLE Metal Leve simulation team, in order to explore the level of confidence and reliability of available commercial LOC simulation codes. An initial validation using engine test results was carried-out and some parametric studies were performed to estimate the influence of some model variables on LOC.One code was selected considering aspects like: levels of development and complexity, technical support and correlation with the measurements results. This selected code is already available at MAHLE Metal Leve helping to better predict and understand the LOC causes. It is supporting the exploration of engine components optimization to reduce engine LOC in combination with several other demands like friction, durability etc.

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“…They serve as micro-hydrodynamic bearings under mixed or full lubrication, lubricant reservoirs during lubrication starvation and wear debris micro-traps during dry sliding. 5,6…”

Section: Introductionmentioning

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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Cylinder Bore Finishes and Their Effect on Oil Consumption

Cited by 17 publications

References 3 publications

New methods of internal combustion engine cylinder surface forming

New methods of internal combustion engine cylinder surface forming

Lube Oil Consumption Simulation: Validation and Parametric Investigation

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

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