Results 41 to 50 of about 957 (204)
Artificial Aging Experiments of Neat and Contaminated Engine Oil Samples
Lubricants, 2021 This study highlights how the results from an artificial engine oil aging method compare to used engine oil samples collected from a vehicle fleet. Additionally, this paper presents the effect of contaminating the oil during aging with synthetic fuel ...
András Lajos Nagy +2 more
doaj +1 more source
Effect of lubricant ageing on lubricants' physical and chemical properties and tribological performance; Part I: effect of lubricant chemistry [PDF]
, 2018 Purpose Ageing has been known to affect the performance of lubricants. However, there is a lot of debate as to whether ageing is beneficial or detrimental to the wear performance of lubricants. Design/methodology/approach The purpose of this
Cen, H, Morina, A, Neville, A
core +2 more sources
Lubrication Science, Volume 32, Issue 4, Page 183-191, June 2020., 2020 Abstract In this study, the decomposition of a multialkylated cyclopentane (MAC) and a perfluoro‐poly‐ether (PFPE) lubricant was investigated in a ball‐on‐disc sliding test under vacuum and in a rolling contact fatigue (RCF) test on full bearings. In situ mass spectrometry was conducted to study the tribochemical formation of hydrogen in a steel‐on ...
Dominik Kürten +2 more
wiley +1 more source
Frontiers in Mechanical Engineering, 2015 We have previously reported an oil-miscible phosphonium-organophosphate ionic liquid (IL) with effective anti-wear functionality when added to a base oil by itself or combined with a conventional zinc dialkyldithiophosphate (ZDDP) for a synergistic ...
William C Barnhill +7 more
doaj +1 more source
Effects of Using Alternative Extreme Pressure (EP) and Anti-Wear (AW) Additives with Oxy-Nitrided Samples [PDF]
, 2018 Oxy-nitriding is a widely used industrial process aiming to improve the tribological properties and performance of components. Previous studies have shown the effectiveness of the treatment with friction and wear performance, but very few have focussed ...
Anne Neville +24 more
core +2 more sources
Lubricants, 2023 This work investigates the influence of altered engine oil on the tribological performance, focusing in particular on wear and interconnected tribofilm formation.
Martin Jech +4 more
doaj +1 more source
Lubrication of DLC Coatings with Two Tris(pentafluoroethyl)trifluorophosphate Anion-Based Ionic Liquids [PDF]
, 2013 The lubrication of a Cr-DLC coating with ethyl-dimethyl-2-methoxyethylammonium tris(pentafluoroethyl)trifluoropho-sphate [(NEMM)MOE][FAP] and 1-butyl-1-methylpyrro-lidinium tris(pentafluoroethyl)trifluorophosphate [BMP] [FAP] ionic liquids (ILs) as 1 wt%
A. Fernández-González +5 more
core +1 more source
The Distribution of Zinc in Low-Friction ZDDP Tribofilm on Iron Oxide
Tribology Online, 2009 To develop a low-friction and low-wear tribo-system for engine components, the authors have been studying the ZDDP tribofilm formed on iron oxide. Tribotests on iron-oxide / steel sliding pairs were performed in PAO with 1 mass% ZDDP.
Kosuke Ito +3 more
doaj +1 more source
Phosphorus deposition on a three-way catalyst under accelerated ageing conditions [PDF]
, 2011 Degradation of catalyst performance with time is described as ageing. There are two significant ageing mechanisms: poisoning and sintering. Experimental data on ageing have been obtained on an engine test bed using a specially designed catalyst core ...
Benjamin, Stephen F. +5 more
core +1 more source
Friction, 2017 To enhance the lubricating and extreme pressure (EP) performance of base oils, two types of oil-soluble ionic liquids (ILs) with similar anion albeit dissimilar cations were synthesized. The physical properties of the prepared ILs were measured.
Guowei Huang +5 more
doaj +1 more source