Improving Hypoid Gear Oil Pitting Performance through Friction Reduction
Document identifier: oai:DiVA.org:ltu-76575
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10.1080/10402004.2019.1686194Keyword: Engineering and Technology,
Mechanical Engineering,
Tribology (Interacting Surfaces including Friction, Lubrication and Wear),
Teknik och teknologier,
Maskinteknik,
Tribologi (ytteknik omfattande friktion, nötning och smörjning),
Gear lubricants,
Rolling contact fatigue,
EHL friction,
Antifatigue additives,
Machine Elements,
MaskinelementPublication year: 2020Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: Earlier studies have shown that the load-dependent friction behavior of various gear oils can affect their pitting performance; that is, low friction resulted in a long pitting life. These studies were limited, however, to test methods and running conditions quite different from those occurring in actual gear transmissions. In the present study, a more gear-like twin-disc machine with test specimens and running conditions relevant for gear contacts was used to investigate whether the same trends could be found. To analyze this possible correlation, the first step was to prepare a set of hypoid gear oils and to test their friction performance to compare various ways of improving friction behavior but also to form an understanding of why their friction performance varied. The second step was to test the pitting performance of the oils. The pitting results could then be compared to the friction properties of the oils to analyze the correlation. Other possible mechanisms behind the formation of pits are also discussed. The results show that for the oils included, the antiwear and extreme-pressure additive package and the base oil type affect friction. The results further show that additive combinations and/or base oils that result in low friction lead to enhanced pitting performance.
Authors
Jens E. Johansson
Luleå tekniska universitet; Maskinelement
Other publications
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Mark T. Devlin
Fundamental Research, Afton Chemical Corporation, Richmond, VA, USA
Other publications
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Jeffrey M. Guevremont
Fundamental Research, Afton Chemical Corporation, Richmond, VA, USA
Other publications
>>
Braham Prakash
Luleå tekniska universitet; Maskinelement
Other publications
>>
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header:
identifier: oai:DiVA.org:ltu-76575
datestamp: 2021-04-19T12:42:24Z
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recordCreationDate: 2019-10-30
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10.1080/10402004.2019.1686194
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titleInfo:
@attributes:
lang: eng
title: Improving Hypoid Gear Oil Pitting Performance through Friction Reduction
abstract: Earlier studies have shown that the load-dependent friction behavior of various gear oils can affect their pitting performance; that is low friction resulted in a long pitting life. These studies were limited however to test methods and running conditions quite different from those occurring in actual gear transmissions. In the present study a more gear-like twin-disc machine with test specimens and running conditions relevant for gear contacts was used to investigate whether the same trends could be found. To analyze this possible correlation the first step was to prepare a set of hypoid gear oils and to test their friction performance to compare various ways of improving friction behavior but also to form an understanding of why their friction performance varied. The second step was to test the pitting performance of the oils. The pitting results could then be compared to the friction properties of the oils to analyze the correlation. Other possible mechanisms behind the formation of pits are also discussed. The results show that for the oils included the antiwear and extreme-pressure additive package and the base oil type affect friction. The results further show that additive combinations and/or base oils that result in low friction lead to enhanced pitting performance.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Mechanical Engineering
Tribology (Interacting Surfaces including Friction Lubrication and Wear)
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Maskinteknik
Tribologi (ytteknik omfattande friktion nötning och smörjning)
@attributes:
lang: eng
topic: Gear lubricants
@attributes:
lang: eng
topic: rolling contact fatigue
@attributes:
lang: eng
topic: EHL friction
@attributes:
lang: eng
topic: antifatigue additives
@attributes:
lang: eng
authority: ltu
topic: Machine Elements
genre: Research subject
@attributes:
lang: swe
authority: ltu
topic: Maskinelement
genre: Research subject
language:
languageTerm: eng
genre:
publication/journal-article
ref
note:
Published
4
Validerad;2020;Nivå 2;2020-04-21 (johcin)
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Johansson
Jens E.
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affiliation:
Luleå tekniska universitet
Maskinelement
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Devlin
Mark T.
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affiliation: Fundamental Research Afton Chemical Corporation Richmond VA USA
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Guevremont
Jeffrey M.
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roleTerm: aut
affiliation: Fundamental Research Afton Chemical Corporation Richmond VA USA
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authority: ltu
namePart:
Prakash
Braham
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Maskinelement
nameIdentifier:
brap
0000-0003-1454-1118
originInfo:
dateIssued: 2020
publisher: Taylor & Francis
relatedItem:
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titleInfo:
title: Tribology Transactions
identifier:
1040-2004
1547-397X
part:
detail:
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type: volume
number: 63
@attributes:
type: issue
number: 2
extent:
start: 280
end: 295
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form: print
typeOfResource: text