The effect of oil ageing on friction in elastohydrodynamic lubrication
Document identifier: oai:DiVA.org:ltu-75833
Keyword: Engineering and Technology,
Mechanical Engineering,
Tribology (Interacting Surfaces including Friction, Lubrication and Wear),
Teknik och teknologier,
Maskinteknik,
Tribologi (ytteknik omfattande friktion, nötning och smörjning),
Machine Elements,
MaskinelementPublication year: 2018Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: Numerical modeling of friction in elastohydrodynamically lubricated contacts are of high importance in the development of various types of machine elements such as gears, rolling element bearings and cam followers. The friction generated in the machine elements of a system does not only affect efficiency, but also the dynamics and overall function. Accurate simulation of the friction generated in machine components is, among other things dependent on realistic lubricant properties, which may change during ageing of the lubricant. Many modern machines are in operation for several hundred ours before the oil is changed. In this work, two engine oils, one 10W-30 and one 5W-20, have been aged in full heavy-duty diesel engine bench tests for a duration comparable to the amount of ageing these oils are subjected to between oil drains in field conditions. The aged oils were subjected to several analyses showing, among other things, a maximum increase in viscosity, and a reduction in some additives. Fresh and aged oils were tested in a ball-on-disc test rig under elastohydrodynamic conditions where friction was measured. The results showed almost no difference in elastohydrodynamic friction between the fresh and the aged oils.
Authors
Marcus Björling
Luleå tekniska universitet; Maskinelement
Other publications
>>
Kim Berglund
Luleå tekniska universitet; Maskinelement
Other publications
>>
Andrew Spencer
Scania
Other publications
>>
Roland Larsson
Luleå tekniska universitet; Maskinelement
Other publications
>>
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header:
identifier: oai:DiVA.org:ltu-75833
datestamp: 2021-04-28T23:05:00Z
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recordContentSource: ltu
recordCreationDate: 2019-09-04
identifier: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75833
titleInfo:
@attributes:
lang: eng
title: The effect of oil ageing on friction in elastohydrodynamic lubrication
abstract: Numerical modeling of friction in elastohydrodynamically lubricated contacts are of high importance in the development of various types of machine elements such as gears rolling element bearings and cam followers. The friction generated in the machine elements of a system does not only affect efficiency but also the dynamics and overall function. Accurate simulation of the friction generated in machine components is among other things dependent on realistic lubricant properties which may change during ageing of the lubricant. Many modern machines are in operation for several hundred ours before the oil is changed. In this work two engine oils one 10W-30 and one 5W-20 have been aged in full heavy-duty diesel engine bench tests for a duration comparable to the amount of ageing these oils are subjected to between oil drains in field conditions. The aged oils were subjected to several analyses showing among other things a maximum increase in viscosity and a reduction in some additives. Fresh and aged oils were tested in a ball-on-disc test rig under elastohydrodynamic conditions where friction was measured. The results showed almost no difference in elastohydrodynamic friction between the fresh and the aged oils.
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
authority: ltu
topic: Machine Elements
genre: Research subject
@attributes:
lang: swe
authority: ltu
topic: Maskinelement
genre: Research subject
language:
languageTerm: eng
genre:
conference/other
ref
note:
Published
4
name:
@attributes:
type: personal
authority: ltu
namePart:
Björling
Marcus
1983-
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Maskinelement
nameIdentifier:
marbjo
0000-0002-4271-0380
@attributes:
type: personal
authority: ltu
namePart:
Berglund
Kim
1982-
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Maskinelement
nameIdentifier:
kimber
0000-0002-8533-897x
@attributes:
type: personal
namePart:
Spencer
Andrew
role:
roleTerm: aut
affiliation: Scania
@attributes:
type: personal
authority: ltu
namePart:
Larsson
Roland
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Maskinelement
nameIdentifier:
rola
0000-0001-9110-2819
originInfo:
dateIssued: 2018
physicalDescription:
form: print
typeOfResource: text