Wear of Valve Train Components Due to Soot Contaminated Lubricant

Green, D. A.; Lewis, Roger; Dwyer-Joyce, R. S.

doi:10.4271/2006-01-1098

Cited by 11 publications

(12 citation statements)

References 8 publications

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“…After testing for 200 h, the cross-head components of the engine valve train were examined using SEM imaging. The components were shown to have heavily worn surfaces similar to those seen in the work by Green et al [35]. The wearing process progressed from lubricated wear, where the oil-film thickness is greater than the primary soot particles present because of oil thickening, to abrasive three-body wear.…”

Section: Link Between Laboratory and Engine Testingsupporting

confidence: 53%

“…These methods have their limitations, as recognized by Bell [34], who stated that it was necessary to test the levels of wear using test equipment that was designed to replicate the engine components in question, rather than generic wear testers. Tests have been carried out since then using test conditions related to actual components [31], as well as some with actual components [35]. Engine tests have also been used to study soot-related wear, usually through industry standard engine tests.…”

Section: Test Apparatusmentioning

confidence: 99%

“…To this end, Green et al [35] have carried out tests using the same HFR rig described above using actual elephant's feet and valve tips. These were run at a sinusoidal mean sliding speed of 0.24 m/s (a frequency of 45 Hz).…”

Section: Link Between Laboratory and Engine Testingmentioning

confidence: 99%

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The effects of soot-contaminated engine oil on wear and friction: A review

Green

Lewis

2008

Proceedings of the Institution of Mechanical Engineers, Part D:

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During the diesel engine combustion process, soot particles are produced and are either exhausted into the atmosphere or absorbed by the engine's lubricant. Soot-contaminated lubricant has been shown to produce significant amounts of engine wear. The main mechanism of soot-related wear is through abrasion, but, at increased levels of soot content in the lubricant, starvation of the contact can occur, which can increase wear further. High concentrations of soot can increase the local acidic level and, around the piston where high temperatures and volatile gases coexist, corrosion may also occur. In this paper, the current understanding of engine wear due to soot contamination and the previous research performed is reviewed. The paper also discusses soot formation and its general effects within the engine (including friction and efficiency), as well as other issues including filtration or removal, effects on the lubricant, engine design and operation, and future industry targets and technologies related to soot contamination.

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Section: Link Between Laboratory and Engine Testingsupporting

confidence: 53%

Section: Test Apparatusmentioning

confidence: 99%

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The effects of soot-contaminated engine oil on wear and friction: A review

Green

Lewis

2008

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…It was found that the lubricant contaminated with carbon soot resulted in increased wear (Mainwaring, 1997). Experimental work with fundamental specimens was conducted by Green et al (2006) on the effect of soot-contaminated oil on valvetrain component wear. They confirmed that the wear volume increased with the level of carbon black content in the oil due to metal sliding wear, soot particle abrasion, and starvation of lubricant from the contact.…”

Section: Impact Of Carbon Soot On Abrasive Wearmentioning

confidence: 99%

Durability and reliability in diesel engine system design

Xin¹

2013

Diesel Engine System Design

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“…Figure8: A depiction of the influence of EGR on the wear of tribological components in a 4-cylinder engine [33] A number ofstudies have been carried out to understand the effects of soot on ferrous materials such as steel and cast iron that are commonly used in engine components [5,6,31,34,39,40,53]. It is known that the presence of soot causes high wear and also affect friction in contacts.…”

Section: Soot Effects On Wear and Friction Of Ferrous Metalsmentioning

confidence: 99%

Contemporary challenges of soot build-up in IC engine and their tribological implications

Abdulqadir

Nor

Lewis

et al. 2018

Tribology - Materials, Surfaces & Interfaces

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Confronted with the contemporary challenges of maximizing energy efficiency with minimal impact on the environment, the automotive industry has developed various technologies to tackle them. Most of these technologies, however,have wider implications on the tribological performance of the automotive engines due to resultant soot build-up. This paper reviews the effects that attempts by stakeholders to satisfy requirements for reduced fuel consumption, reduced emissions and extended service intervals havehad on increasing soot levels to an extent that can lead to engine component failure.Three areas have been identified that have either not been explored or not widely explored in the study of automotive soot, namely: numerical simulation and modelling of soot wear, soot effects on wear of actual engine components and the wear and friction performance of non-metallic materials used in ICEs. A paper-grading system is also utilised to present an overview of how sooty oil related research covers various areas.

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Wear of Valve Train Components Due to Soot Contaminated Lubricant

Cited by 11 publications

References 8 publications

The effects of soot-contaminated engine oil on wear and friction: A review

The effects of soot-contaminated engine oil on wear and friction: A review

Durability and reliability in diesel engine system design

Contemporary challenges of soot build-up in IC engine and their tribological implications

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