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Virtual texturing of lightweight engine crankshaft bearings

  • Jonatha O. de Matos Reis
  • Gabriel W. Rodrigues
  • Marco L. BittencourtEmail author
Technical Paper
  • 86 Downloads

Abstract

This paper aims to numerically study the effects of surface texturing on reducing the power loss and lift increasing in lightweight crankshaft bearings. A computer program was developed to study the behavior of a dynamically loaded engine crankshaft bearing taking into account roughness effects and surface texturing using dimples. We compare results using the Patir and Cheng modified Reynolds equation and the so-called \(p-\theta \) model proposed by Elrod and Adams. In addition, the JFO mass-conserving model is considered to deal with cavitation. The finite difference method is used to approximate the Patir–Cheng Reynolds equation. Simulations were performed for the main bearing of the lightweight crankshaft, considering different surface texture designs in terms of location, depth and radius of dimples. Some texture designs lower the hydrodynamic fluid pressure peaks by 4.8%, consequently providing additional lift. Lastly, a comparison between the lightweight and regular crankshaft bearings is also considered. The total dissipated power was reduced by 3.6% for the textured lightweight crankshaft bearing.

Keywords

Surface texturing Patir–Cheng Reynolds equation Mixed lubrication Crankshaft journal bearings Power loss 

Notes

References

  1. 1.
    Araujo JA, Cassino FS, Costa AR (2004) Nd: Yag laser texturing and the tribological behavior of a chromium coating. REM Rev Escola Minas 57(1):11–18CrossRefGoogle Scholar
  2. 2.
    Ausas R, Ragot P, Leiva J, Jai M, Bayada G, Buscaglia GC (2007) The impact of the cavitation model in the analysis of microtextured lubricated journal bearings. J Tribol 129(4):868–875CrossRefGoogle Scholar
  3. 3.
    Ausas RF, Jai M, Buscaglia GC (2009) A mass-conserving algorithm for dynamical lubrication problems with cavitation. J Tribol 131(3):031702CrossRefGoogle Scholar
  4. 4.
    Brizmer V, Kligerman Y (2012) A laser surface textured journal bearing. J Tribol 134(3):031702CrossRefGoogle Scholar
  5. 5.
    Cupillard S, Glavatskih S, Cervantes M (2008) Computational fluid dynamics analysis of a journal bearing with surface texturing. Proc Inst Mech Eng Part J J Eng Tribol 222(2):97–107CrossRefGoogle Scholar
  6. 6.
    Dong J, Wang X, Zhang J, Xiang X, Nie Z, Shen J (2017) An experimental research on the vibration of surface-textured journal bearings. Shock Vib 2017:1–9Google Scholar
  7. 7.
    Etsion I (2013) Modeling of surface texturing in hydrodynamic lubrication. Friction 1(3):195–209CrossRefGoogle Scholar
  8. 8.
    Etsion I, Burstein L (1996) A model for mechanical seals with regular microsurface structure. Tribol Trans 39(3):677–683CrossRefGoogle Scholar
  9. 9.
    Frene J, Nicolas D, Degueurce B, Berthe D, Godet M (1997) Hydrodynamic lubrication: bearings and thrust bearings, vol 33. Elsevier, AmsterdamzbMATHGoogle Scholar
  10. 10.
    Gropper D, Wang L, Harvey TJ (2016) Hydrodynamic lubrication of textured surfaces: a review of modeling techniques and key findings. Tribol Int 94:509–529CrossRefGoogle Scholar
  11. 11.
    Hamilton D, Walowit J, Allen C (1966) A theory of lubrication by microirregularities. J Basic Eng 88(1):177–185CrossRefGoogle Scholar
  12. 12.
    Hamrock BJ, Schmid SR, Jacobson BO (2004) Fundamentals of fluid film lubrication. CRC Press, Boca RatonCrossRefGoogle Scholar
  13. 13.
    Holmberg K, Andersson P, Erdemir A (2012) Global energy consumption due to friction in passenger cars. Tribol Int 47:221–234CrossRefGoogle Scholar
  14. 14.
    Kango S, Singh D, Sharma R (2012) Numerical investigation on the influence of surface texture on the performance of hydrodynamic journal bearing. Meccanica 47(2):469–482CrossRefGoogle Scholar
  15. 15.
    Kango S, Sharma R, Pandey R (2014) Thermal analysis of microtextured journal bearing using non-Newtonian rheology of lubricant and jfo boundary conditions. Tribol Int 69:19–29CrossRefGoogle Scholar
  16. 16.
    Ligier JL, Noel B (2015) Friction reduction and reliability for engines bearings. Lubricants 3(3):569–596CrossRefGoogle Scholar
  17. 17.
    Lin Q, Bao Q, Li K, Khonsari M, Zhao H (2018) An investigation into the transient behavior of journal bearing with surface texture based on fluid–structure interaction approach. Tribol Int 118:246–255CrossRefGoogle Scholar
  18. 18.
    Lu X, Khonsari M (2007) An experimental investigation of dimple effect on the stribeck curve of journal bearings. Tribol Lett 27(2):169CrossRefGoogle Scholar
  19. 19.
    Ma C, Sun J, Wang Y, Yu B, Yu Q, Tu Q (2017) On the optimum dimple depth-over-diameter ratio for textured surfaces. Adv Mech Eng 9(9):1687814017720085CrossRefGoogle Scholar
  20. 20.
    Patir N, Cheng H (1978) An average flow model for determining effects of three-dimensional roughness on partial hydrodynamic lubrication. J lubr Technol 100(1):12–17CrossRefGoogle Scholar
  21. 21.
    Profito FJ (2010) One-dimensional modeling of the mixed lubrication regime applied to textured surfaces. Master’s thesis, University of São PauloGoogle Scholar
  22. 22.
    Profito FJ (2015) On the development of advanced techniques for mixed-elastohydrodynamic lubrification modelling of journal and sliding bearing systems. PhD thesis, University of São PauloGoogle Scholar
  23. 23.
    Reynolds O (1886) IV. On the theory of lubrication and its application to mr. beauchamp towers experiments, including an experimental determination of the viscosity of olive oil. Philos Trans R Soc Lond 177:157–234CrossRefGoogle Scholar
  24. 24.
    Rodrigues ADS (2013) Dynamic analysis and balancing of lightweight engine crankshafts. Master’s thesis, University of CampinasGoogle Scholar
  25. 25.
    Sharma N, Kango S, Tayal A, Sharma RK, Sunil (2016) Investigations on the influence of surface texturing on a couple stress fluid-based journal bearing by using jfo boundary conditions. Tribol Trans 59(3):579–584CrossRefGoogle Scholar
  26. 26.
    Tala-Ighil N, Fillon M (2015) A numerical investigation of both thermal and texturing surface effects on the journal bearings static characteristics. Tribol Int 90:228–239CrossRefGoogle Scholar
  27. 27.
    Tala-Ighil N, Maspeyrot P, Fillon M, Bounif A (2007) Effects of surface texture on journal-bearing characteristics under steady-state operating conditions. Proc Inst Mech Eng Part J J Eng Tribol 221(6):623–633CrossRefGoogle Scholar
  28. 28.
    Wang S, Yan F, Chen A (2018) Tribological effects of laser surface texturing and residual stress. Ind Lubr Tribol 70(1):126–132CrossRefGoogle Scholar

Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2019

Authors and Affiliations

  • Jonatha O. de Matos Reis
    • 1
  • Gabriel W. Rodrigues
    • 1
  • Marco L. Bittencourt
    • 1
    Email author
  1. 1.Laboratory of Computational Simulation, Department of Integrated SystemsUniversity of CampinasCampinasBrazil

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