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Characterising lubricating oil viscosity to describe effects on engine friction
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Shayler, P. J., Allen, A. J., Leong, D. K. W., Pegg, I., Brown, A. J. and Dumenil, J-C. (2007) Characterising lubricating oil viscosity to describe effects on engine friction. In: 2007 JSAE/SAE International Fuels and Lubricants Meeting, Kyoto, Japan, 23-27 July 2007. Published in: SAE Technical Papers doi:10.4271/2007-01-1984 ISSN 0148-7191.
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Official URL: http://dx.doi.org/10.4271/2007-01-1984
Abstract
Oil formulation has been varied to modify oil viscosity characteristics; the effect on the rubbing friction losses of a 2.4litre diesel engine has been investigated for a range of temperatures from -20 to around 60°C. The aims of the study were first, to examine the extent to which viscosity alone determined the effect of formulation changes, and second, to define an effective viscosity to relate changes in viscosity due to formulation and temperature to changes in engine friction. This effective viscosity is based on cold cranking simulator measurements at -30°C, high temperature high shear viscosity at 150°C and kinematic viscosity measurements at three intermediate temperatures to define the variation with temperature. The effective viscosity has been described using a modified Vogel equation, which is presented.
Item Type: | Conference Item (Paper) | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | SAE Technical Papers | ||||
Publisher: | Society of Automobile Engineers | ||||
ISSN: | 0148-7191 | ||||
Book Title: | SAE Technical Paper Series | ||||
Official Date: | 23 July 2007 | ||||
Dates: |
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DOI: | 10.4271/2007-01-1984 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | 2007 JSAE/SAE International Fuels and Lubricants Meeting | ||||
Type of Event: | Other | ||||
Location of Event: | Kyoto, Japan | ||||
Date(s) of Event: | 23-27 July 2007 |
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