Effect of Oil Dispersion on Lubricating Film Thickness Generation under Oil Droplet Supply Conditions

Chenglong Liu; Wei Li; Feng Guo; Patrick Wong; Xinming Li

doi:10.3390/lubricants11120512

Effect of Oil Dispersion on Lubricating Film Thickness Generation under Oil Droplet Supply Conditions

Chenglong Liu, Wei Li, Feng Guo^*, Patrick Wong, Xinming Li

^*Corresponding author for this work

Department of Mechanical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

1 Citation (Scopus)

10 Downloads (CityUHK Scholars)

Abstract

Oil–air lubrication has proven to be very effective for high-speed bearings because the oil supply in the form of droplets can be precisely controlled. This work uses optical interferometry to study the mechanism of lubricating film formation in rolling point contact with oil droplet lubrication. The effect of a double oil drop pair, where two oil droplets are positioned in mirror images about the central axis of the lubricated track, is examined. The process by which pairs of oil droplets approach and lubricate a bearing contact is analysed. This study also covers the effect of multiple oil droplets supplied in a tailored or a random dispersion pattern. Additionally, the effects of oil viscosity, entrainment velocity, and droplet distribution on starvation are also investigated. © 2023 by the authors.

Original language	English
Article number	512
Journal	Lubricants
Volume	11
Issue number	12
Online published	3 Dec 2023
DOIs	https://doi.org/10.3390/lubricants11120512
Publication status	Published - Dec 2023

Funding

This research is funded by the Research Grants Council of Hong Kong (No. CityU 11215021), the National Natural Science Foundation of China (No. 52175173), the National Natural Science Foundation of China (No. 52205201), and the Youth Foundation of Shandong Natural Science Foundation (ZR2022QE027).

Research Keywords

film thickness generation
oil dispersion
oil droplets
point contact
starvation

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

RGC Funding Information

RGC-funded

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10.3390/lubricants11120512

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title = "Effect of Oil Dispersion on Lubricating Film Thickness Generation under Oil Droplet Supply Conditions",

abstract = "Oil–air lubrication has proven to be very effective for high-speed bearings because the oil supply in the form of droplets can be precisely controlled. This work uses optical interferometry to study the mechanism of lubricating film formation in rolling point contact with oil droplet lubrication. The effect of a double oil drop pair, where two oil droplets are positioned in mirror images about the central axis of the lubricated track, is examined. The process by which pairs of oil droplets approach and lubricate a bearing contact is analysed. This study also covers the effect of multiple oil droplets supplied in a tailored or a random dispersion pattern. Additionally, the effects of oil viscosity, entrainment velocity, and droplet distribution on starvation are also investigated. {\textcopyright} 2023 by the authors.",

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author = "Chenglong Liu and Wei Li and Feng Guo and Patrick Wong and Xinming Li",

year = "2023",

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doi = "10.3390/lubricants11120512",

language = "English",

volume = "11",

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TY - JOUR

T1 - Effect of Oil Dispersion on Lubricating Film Thickness Generation under Oil Droplet Supply Conditions

AU - Liu, Chenglong

AU - Li, Wei

AU - Guo, Feng

AU - Wong, Patrick

AU - Li, Xinming

PY - 2023/12

Y1 - 2023/12

N2 - Oil–air lubrication has proven to be very effective for high-speed bearings because the oil supply in the form of droplets can be precisely controlled. This work uses optical interferometry to study the mechanism of lubricating film formation in rolling point contact with oil droplet lubrication. The effect of a double oil drop pair, where two oil droplets are positioned in mirror images about the central axis of the lubricated track, is examined. The process by which pairs of oil droplets approach and lubricate a bearing contact is analysed. This study also covers the effect of multiple oil droplets supplied in a tailored or a random dispersion pattern. Additionally, the effects of oil viscosity, entrainment velocity, and droplet distribution on starvation are also investigated. © 2023 by the authors.

AB - Oil–air lubrication has proven to be very effective for high-speed bearings because the oil supply in the form of droplets can be precisely controlled. This work uses optical interferometry to study the mechanism of lubricating film formation in rolling point contact with oil droplet lubrication. The effect of a double oil drop pair, where two oil droplets are positioned in mirror images about the central axis of the lubricated track, is examined. The process by which pairs of oil droplets approach and lubricate a bearing contact is analysed. This study also covers the effect of multiple oil droplets supplied in a tailored or a random dispersion pattern. Additionally, the effects of oil viscosity, entrainment velocity, and droplet distribution on starvation are also investigated. © 2023 by the authors.

KW - film thickness generation

KW - oil dispersion

KW - oil droplets

KW - point contact

KW - starvation

UR - http://www.scopus.com/inward/record.url?scp=85180702825&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85180702825&origin=recordpage

U2 - 10.3390/lubricants11120512

DO - 10.3390/lubricants11120512

M3 - RGC 21 - Publication in refereed journal

SN - 2075-4442

VL - 11

JO - Lubricants

JF - Lubricants

IS - 12

M1 - 512

ER -

Effect of Oil Dispersion on Lubricating Film Thickness Generation under Oil Droplet Supply Conditions

Abstract

Funding

Research Keywords

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GRF: New Surface with Three-dimensional Comb-tooth Grooves for Oil Replenishment of Rolling Bearings

Cite this

Effect of Oil Dispersion on Lubricating Film Thickness Generation under Oil Droplet Supply Conditions

Abstract

Funding

Research Keywords

Publisher's Copyright Statement

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

GRF: New Surface with Three-dimensional Comb-tooth Grooves for Oil Replenishment of Rolling Bearings

Cite this