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Keywords: lubricants
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Journal Articles
Accepted Manuscript
Article Type: Research Papers
J. Tribol.
Paper No: TRIB-22-1303
Published Online: November 11, 2022
...Zhiqiang Liu; Jiandong Yin; Fucheng Zhao Downsizing in spark-ignited engines becomes one of the most effective concepts to achieve fuel economy and emissions requirements and drives operating conditions of major moving engine components into more mixed and boundary lubrication regimes. Piston ring...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2023, 145(1): 011601.
Paper No: TRIB-22-1060
Published Online: September 30, 2022
...Robert J. Sadinski; Carl H. Hager, Jr.; William M. Hannon The relative volume and falling body viscosity of a common high-pressure rheology reference lubricant, di-(2-ethylhexyl) sebacate (DEHS), are presented. Relative volume measurements up to 300 MPa are completed with a piezo-bellows relative...
Journal Articles
Article Type: Research Papers
J. Tribol. September 2022, 144(9): 091902.
Paper No: TRIB-21-1575
Published Online: May 3, 2022
.... , and Kailas , S. V. , 2011 , “ Experimental Investigation of Coconut and Palm Oils as Lubricants in Four-Stroke Engine ,” Tribol. Online , 6 ( 1 ), pp. 76 – 82 . 10.2474/trol.6.76 [2] Kumar , H. , and Harsha , A. P. , 2021 , “ Enhanced Lubrication Ability of Polyalphaolefin...
Journal Articles
Article Type: Research Papers
J. Tribol. September 2022, 144(9): 091202.
Paper No: TRIB-21-1525
Published Online: April 5, 2022
...Justino A. O. Cruz; Pedro M. T. Marques; Jorge H. O. Seabra; Jorge D. Castro This work studies the power loss in a real axle box gear transmission under no-load operating conditions. The influence of the rotational speed and of the lubricant viscosity was considered. An experimental strategy...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2022, 144(8): 081805.
Paper No: TRIB-21-1440
Published Online: February 28, 2022
...Boris Grigor’ev; Artem Eliseev The upper convected Maxwell (UCM) model is one of the ways to describe lubricant’s viscoelasticity. In this paper, a new modified Reynolds equation for the UCM model is derived. This equation may be called extended as compared to its analogs because it incorporates...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2022, 144(8): 081602.
Paper No: TRIB-21-1508
Published Online: February 11, 2022
...Fan Zhang; Nicolas Fillot; Rudolf Hauleitner; Guillermo E. Morales-Espejel A first cavitation modeling with thermal effects for oil/refrigerant solutions lubricated elastohydrodynamic point contacts is reported in this work. The solubility of the oil/refrigerant system is introduced...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071901.
Paper No: TRIB-21-1455
Published Online: January 13, 2022
...Yan Chen; Xuezhen Wang; Zehua Han; Alexander Sinyukov; Abraham Clearfield; Hong Liang The advancement of electric vehicles demands lubricants with multifunction and performance. In this research, we investigated amphiphilic ZrP nanoparticles as lubricant additives. Experiments showed...
Journal Articles
Article Type: Research Papers
J. Tribol. June 2022, 144(6): 061902.
Paper No: TRIB-21-1193
Published Online: December 14, 2021
...Shuai Li; Qiang Ma; Zhe Tong; Qi Liu; Guangneng Dong The major objective of this work is to investigate the synergistic lubricating performance of hexagonal boron nitride (h-BN) and graphite fluoride (GF) nanoparticles (NPs) in white oil. The tribological tests were carried out on steel-steel...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2022, 144(4): 041801.
Paper No: TRIB-21-1131
Published Online: June 29, 2021
... lubrication using current-carrying wire model for the fixed coordinate system, (2) deriving the expressions for the magnetic field model and frictional power loss other than Reynolds equation for ferrofluid lubrication, and (3) evaluation of optimal values of spiral-grooved bearing surface for different cross...
Journal Articles
Article Type: Research Papers
J. Tribol. November 2021, 143(11): 111805.
Paper No: TRIB-21-1086
Published Online: June 18, 2021
...J. B. Boni; C. Changenet; F. Ville Planetary gears are used in several applications given that they provide high reduction ratio in a compact size. Two kinds of lubrication are used in these applications: injection or splash lubrication. In case of splash lubrication, the authors already...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2021, 143(10): 102202.
Paper No: TRIB-21-1067
Published Online: June 16, 2021
... PAO base oils to obtain the optimized lubrication behavior. The test results revealed that PAO 4 exhibited a reduction in friction coefficient (∼27%) and wear volume (∼88%) at a dose of 0.05 wt% and 0.025 wt% MWCNTs, respectively. However, in PAO 6, the minimum coefficient of friction and wear volume...
Journal Articles
Article Type: Research Papers
J. Tribol. February 2022, 144(2): 021704.
Paper No: TRIB-21-1080
Published Online: May 6, 2021
... during tribological interactions is explored. Hence, unidirectional sliding wear experiments were carried out in immersed lubrication conditions for various normal loads. The tribological interactions were studied using EN31-60 HRC flats and SAE52100-60 HRC pins in a sphere on flat configuration...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2022, 144(1): 011901.
Paper No: TRIB-20-1379
Published Online: April 19, 2021
... micronscale iron. The hBN lubricant particles significantly improve the friction performance of iron in various simulation behaviors. The particle size, the air/water background containing the particles, and its temperature result in reduction of the friction coefficient. The surface mending, the protective...
Journal Articles
Article Type: Research Papers
J. Tribol. September 2021, 143(9): 091702.
Paper No: TRIB-20-1371
Published Online: January 8, 2021
...) are the most significant two, followed by Si (silicon content), viscosity, and so on. This is because gears are generally made of steel, once abrasion occurs, naturally there will be more ferromagnetic particles and iron particles in the lubricant. As for Si, we know that impurities in lubricant cause wear...
Journal Articles
Article Type: Research Papers
J. Tribol. September 2021, 143(9): 091201.
Paper No: TRIB-19-1478
Published Online: January 8, 2021
... boundary lubrication elastohydrodynamic lubrication films fluid film lubrication gears lubricants mixed lubrication tribological systems wear cooling heat transfer Modern jet engines for civil applications are characterized by high bypass ratios (BPR), high pressure ratios, and high...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2021, 143(8): 081801.
Paper No: TRIB-20-1209
Published Online: November 20, 2020
... behavior of bearing. However, a better way to overcome such degradation may be to make use of magnetohydrodynamics (MHDs) of fluid. Therefore, the present work is planned to investigate the impact of taper error and MHD lubricant in recessed conical hybrid journal bearing. In this article, the Reynolds...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2021, 143(7): 071901.
Paper No: TRIB-20-1271
Published Online: November 2, 2020
...Rongqin Gao; Wenbo Liu; Qiuying Chang; Hao Zhang; Yang Liu The tribological performance of biocarbon-based magnesium silicate hydroxide nanocomposite was examined as a lubricant additive by using a four-ball friction and wear tester. The effect of different concentrations of additives...
Journal Articles
Article Type: Research Papers
J. Tribol. June 2021, 143(6): 061901.
Paper No: TRIB-20-1312
Published Online: October 27, 2020
...Thomas J. Zolper; Scott Bair; Kyle Horne The ASME Pressure-Viscosity Report was a seminal publication on high pressure-viscosity and density supervised by the ASME Research Committee on Lubrication, sponsored by dozens of industries, and undertaken by Harvard University using high-pressure...
Journal Articles
Article Type: Technical Briefs
J. Tribol. November 2020, 142(11): 114502.
Paper No: TRIB-19-1415
Published Online: August 27, 2020
...Yan Chen; Hong Liang We report a tribo-electrochemical configuration to conduct in situ measurement of electrical conductivity and thickness of lubricating oils against friction. Results showed the non-ohmic behavior of a lubricating film in the hydrodynamic regime. Properties of lubricants...
Includes: Supplementary data
Journal Articles
Article Type: Technical Briefs
J. Tribol. February 2021, 143(2): 024501.
Paper No: TRIB-20-1192
Published Online: August 24, 2020
...Romain Quiban; Christophe Changenet; Yann Marchesse; Fabrice Ville Oil sump lubrication is commonly used in gearboxes. When considering consistent speeds, oil immersion is usually set to low level in order to reduce associated power losses. This configuration is already used in some parts...