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Simulation of piston ring tribology with surface texturing for internal combustion engines.

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Title: Simulation of piston ring tribology with surface texturing for internal combustion engines.
Authors: Zavos, Anastasios B.1, Nikolakopoulos, Pantelis G.1
Source: Lubrication Science. Apr2015, Vol. 27 Issue 3, p151-176. 26p.
Subjects: Piston rings, Tribology, Internal combustion engines, Surface coatings, Navier-Stokes equations
Abstract: Design of piston rings is a very crucial subject in the field of internal combustion engines. In the present paper, a numerical model is created using the Navier-Stokes equations. Fluid-structure interaction analysis is performed in order to calculate the structural integrity of the ring for several engine operational conditions and texturing patterns. This paper illustrates the hydrodynamic friction force under various surface artificial texturing in terms of spherical and rectangular microdimples. Piston ring stress analysis is also investigated due to gas leakage. Results show a substantial reduction of the friction using rectangular texturing and less reduction using spherical texturing. The rectangular microdimple parameters were considered to obtain a better friction reduction with the following configurations: Hd = 4 µm, ρτ = 0.61, λ = 20 and s = 0.004. Each rectangular texture cell is defined by the dimple depth, Hd; the texture density, ρτ; the dimple aspect ratio, λ; and the relative dimple depth, s. Copyright © 2014 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Copyright of Lubrication Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Simulation of piston ring tribology with surface texturing for internal combustion engines.
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  Data: <searchLink fieldCode="AR" term="%22Zavos%2C+Anastasios+B%2E%22">Zavos, Anastasios B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nikolakopoulos%2C+Pantelis+G%2E%22">Nikolakopoulos, Pantelis G.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Lubrication+Science%22">Lubrication Science</searchLink>. Apr2015, Vol. 27 Issue 3, p151-176. 26p.
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  Data: <searchLink fieldCode="DE" term="%22Piston+rings%22">Piston rings</searchLink><br /><searchLink fieldCode="DE" term="%22Tribology%22">Tribology</searchLink><br /><searchLink fieldCode="DE" term="%22Internal+combustion+engines%22">Internal combustion engines</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink><br /><searchLink fieldCode="DE" term="%22Navier-Stokes+equations%22">Navier-Stokes equations</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Design of piston rings is a very crucial subject in the field of internal combustion engines. In the present paper, a numerical model is created using the Navier-Stokes equations. Fluid-structure interaction analysis is performed in order to calculate the structural integrity of the ring for several engine operational conditions and texturing patterns. This paper illustrates the hydrodynamic friction force under various surface artificial texturing in terms of spherical and rectangular microdimples. Piston ring stress analysis is also investigated due to gas leakage. Results show a substantial reduction of the friction using rectangular texturing and less reduction using spherical texturing. The rectangular microdimple parameters were considered to obtain a better friction reduction with the following configurations: Hd = 4 µm, ρτ = 0.61, λ = 20 and s = 0.004. Each rectangular texture cell is defined by the dimple depth, Hd; the texture density, ρτ; the dimple aspect ratio, λ; and the relative dimple depth, s. Copyright © 2014 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
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  Group: Ab
  Data: <i>Copyright of Lubrication Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/ls.1261
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        Text: English
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        PageCount: 26
        StartPage: 151
    Subjects:
      – SubjectFull: Piston rings
        Type: general
      – SubjectFull: Tribology
        Type: general
      – SubjectFull: Internal combustion engines
        Type: general
      – SubjectFull: Surface coatings
        Type: general
      – SubjectFull: Navier-Stokes equations
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              Text: Apr2015
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