Low Temperature Rheological Properties of Aged Crankcase Oils

Batko, Michael A.; Florkowski, Dennis W.; Devlin, Mark T.; Li, Shoutian; Eggerding, David W.; Lam, William Y.; McDonnell, Thomas F.; Jao, Tze‐Chi

doi:10.4271/2000-01-2943

Cited by 11 publications

(2 citation statements)

References 14 publications

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“…Investigations by Batko et al [64] looked at the increase in the viscosities of oils from the field, specifically passenger cars equipped with 2.7 l DOHC V6 engines operating under 'taxi-cab' conditions, including 'stop and go' and idling situations (which would promote soot production). Oil sampling and testing was performed at 4000 km operating periods, up to 16 000 km.…”

Section: Effects Of Soot On Lubricantsmentioning

confidence: 99%

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: Effects Of Soot On Lubricantsmentioning

confidence: 99%

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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show abstract

“…Oils which pass pumpability requirements as fresh oil can still give pumpability failures when the oil has been aged in an engine. Identified by Bartko et al [10], oils in an oxidised state exhibited pumpability failures by either the air binding (Yield Stress) or Viscosity aspect of the ASTM D4684 MRV TP-1 procedure even though other rheological properties such as CCS or kinematic viscosity were not necessarily excessively high. The recognition that oxidised oil could lead to pumpability failures and also increase viscosity that could detriment fuel efficiency lead to the introduction of used oil pumpability limits in the ILSAC GF-4 specification [11].…”

Section: Historical Context To Current Engine Oil Low Temperature Reqmentioning

confidence: 99%