A discussion of Yu, M., Zhang, J., Joedicke, A., & Reddyhoff, T. (2021). Experimental investigation into the effects of diesel dilution on engine lubrication. Tribol. Int., 156, 106828

Article Engineering, Mechanical

A comparison of measured film thicknesses with quantitative predictions from an elastohydrodynamic, perturbation analysis at high slide-roll ratios

Chris Hooke et al.

Summary: The behavior of elastohydrodynamic contacts at high slide-roll ratios differs significantly from that at low slide-roll ratios and rolling conjunctions, characterized by viscosity reduction due to shear-thinning and temperature rises in the fluid and mating surfaces. Experimental results with artificial roughness are compared to perturbation analysis to predict behavior, showing strong feedback mechanisms in thermal and shear thinning which make surface roughness relatively insensitive to changes in fluid properties. Real temperature, pressure, and shear dependencies of viscosity as measured in viscometers have been utilized in contrast to most previous work.

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY (2021)

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Article Engineering, Mechanical

Experimental investigation into the effects of diesel dilution on engine lubrication

Min Yu et al.

Summary: This study investigates the impact of diesel dilution on lubricant properties, chemical performance, friction, and wear through various tribometer tests. Results indicate that diesel dilution reduces viscosity and film thickness of lubricants, with minimal effects on chemical additive performance. Care must be taken in using viscometrics to predict dilution behavior due to various factors affecting lubrication contacts.

TRIBOLOGY INTERNATIONAL (2021)

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Article Engineering, Chemical