Friction Characteristics of Steel Pistons for Diesel Engines
Name
Kim-2012-Friction Characteris.pdf
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2.06 MB
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Checksum (MD5)
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Author(s)
Kim, Dallwoo
Ito, Akemi
Ishikawa, Yasuhiro
Osawa, Katsuyuki
Iwasaki, Yoshiyuki
Date Issued
June 2013
Journal
Journal of Materials Research and Technology
Publisher
Elsevier
Citation
Kim, Dallwoo, Akemi Ito, Yasuhiro Ishikawa, Katsuyuki Osawa, and Yoshiyuki Iwasaki. “Friction Characteristics of Steel Pistons for Diesel Engines.” Journal of Materials Research and Technology 1, no. 2 (July 2012): 96–102. © 2012 Brazilian Metallurgical, Materials and Mining Association
Version
Final published version
Abstract
The use of iron pistons is increasing due to the higher power requirements of diesel truck engines. Expansion of the iron piston is a common concern. The purpose of this study is to clarify the lubrication conditions of cast iron and steel pistons. Friction of steel and cast iron pistons were measured using the floating liner method. The friction of conventional aluminum pistons was also measured for comparison in this study. The measurement of the secondary motion of each piston was carried out to analyse piston friction, and the following findings were obtained. The cast iron piston showed boundary lubrication at compression top dead center (TDC). This is presumably caused by the larger tilting angle of the piston induced by the larger piston clearance. Steel pistons showed hydrodynamic lubrication conditions at TDC and BDC through each cycle, due to a good oil supply.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Sloan Automotive Laboratory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1016/S2238-7854(12)70018-2
