Minimization of parasitic losses in the internal combustion (IC) engine is essential for improved fuel efficiency and reduced emissions. Surface texturing has emerged as a method palliating these losses in instances where thin lubricant films lead to mixed or boundary regimes of lubrication. Such thin films are prevalent in contact of compression ring to cylinder liner at piston motion reversals because of momentary cessation of entraining motion. The paper provides combined solution of Reynolds equation, boundary interactions, and a gas flow model to predict the tribological conditions, particularly at piston reversals. This model is then validated against measurements using a floating liner for determination of in situ friction of an engine under motored condition. Very good agreement is obtained. The validated model is then used to ascertain the effect of surface texturing of the liner surface during reversals. Therefore, the paper is a combined study of numerical predictions and the effect of surface texturing. The predictions show that some marginal gains in engine performance can be expected with laser textured chevron features of shallow depth under certain operating conditions.
Issue Section:
Hydrodynamic Lubrication
Topics:
Compression,
Cylinders,
Engines,
Friction,
Lubricants,
Pistons,
Pressure,
Lubrication,
Piston rings,
Surface texture,
Gas flow
References
1.
Andersson
, B. S.
, 1991
, “Company's Perspective in Vehicle Tribology
,” 18th Leeds-Lyon Symposium
, D.
Dowson
, C. M.
Taylor
, and M.
Godet
, eds., Elsevier
, The Netherlands
, pp. 503
–506
.2.
Etsion
, I.
, and Sher
, E.
, 2009
, “Improving Fuel Efficiency With Laser Surface Textured Piston Rings
,” Tribol. Int.
, 42
(4
), pp. 542
–547
.3.
Howell-Smith
, S.
, Rahnejat
, H.
, King
, P. D.
, and Dowson
, D.
, 2014
, “Reducing In-Cylinder Parasitic Losses Through Surface Modification and Coating
,” Proc. Inst. Mech. Eng., Part D
, 228
(4
), pp. 391
–402
.4.
Tian
, T.
, Noordzij
, L. B.
, Wong
, V. W.
, and Heywood
, J. B.
, 1998
, “Modelling Piston-Ring Dynamics, Blowby, and Ring-Twist Effects
,” ASME J. Eng. Gas Turbines Power
, 120
(4
), pp. 843
–854
.5.
Baker
, C. E.
, Theodossiades
, S.
, Rahnejat
, H.
, and Fitzsimons
, B.
, 2012
, “Influence of in-Plane Dynamics of Thin Compression Rings on Friction in Internal Combustion Engines
,” ASME J. Eng. Gas Turbines Power
, 134
(9
), p. 092801
.6.
Chong
, W. W. F.
, Teodorescu
, M.
, and Vaughan
, N. D.
, 2011
, “Cavitation Induced Starvation for Piston-Ring/Liner Tribological Conjunction
,” Tribol. Int.
, 44
(4
), pp. 483
–497
.7.
Shahmohamadi
, H.
, Rahmani
, R.
, Rahnejat
, H.
, Garner
, C. P.
, and King
, P. D.
, 2013
, “Thermo-Mixed Hydrodynamics of Piston Compression Ring Conjunction
,” Tribol. Lett.
, 51
(3
), pp. 323
–340
.8.
Namazian
, M.
, and Heywood
, J. B.
, 1982
, “Flow in the Piston-Cylinder-Ring Crevices of a Spark-Ignition Engine: Effect on Hydrocarbon Emissions, Efficiency and Power
,” SAE
Technical Paper No. 820088.9.
Baker
, C. E.
, Rahmani
, R.
, Karagiannis
, I.
, Theodossiades
, S.
, Rahnejat
, H.
, and Frendt
, A.
, 2014
, “Effect of Compression Ring Elastodynamics Behaviour Upon Blowby and Power Loss
,” SAE
Technical Paper No. 2014-01-1669.10.
Akalin
, O.
, and Newaz
, G. M.
, 2001
, “Piston Ring-Cylinder Bore Friction Modeling in Mixed Lubrication Regime: Part I: Analytical Results
,” ASME J. Tribol.
, 123
(1
), pp. 211
–218
.11.
Akalin
, O.
, and Newaz
, G. M.
, 2001
, “Piston Ring-Cylinder Bore Friction Modeling in Mixed Lubrication Regime: Part II-Correlation With Bench Test Data
,” ASME J. Tribol.
, 123
(1
), pp. 219
–223
.12.
Bolander
, N. W.
, Steenwyk
, B. D.
, Sadeghi
, F.
, and Gerber
, G. R.
, 2005
, “Lubrication Regime Transitions at the Piston Ring-Cylinder Liner Interface
,” Proc. Inst. Mech. Eng., Part J
, 219
(1
), pp. 19
–31
.13.
Mishra
, P. C.
, Rahnejat
, H.
, and King
, P. D.
, 2009
, “Tribology of the Ring-Bore Conjunction Subject to a Mixed Regime of Lubrication
,” Proc. Inst. Mech. Eng., Part C
, 223
(4
), pp. 987
–998
.14.
Rahmani
, R.
, Theodossiades
, S.
, Rahnejat
, H.
, and Fitzsimons
, B.
, 2012
, “Transient Elastohydrodynamic Lubrication of Rough New or Worn Piston Compression Ring Conjunction With an Out-of-Round Cylinder Bore
,” Proc. Inst. Mech. Eng., Part J
, 226
(4
), pp. 284
–305
.15.
Furuhama
, S.
, and Sasaki
, S.
, 1983
, “New Device for the Measurement of Piston Frictional Forces in Small Engines
,” SAE
Technical Paper No. 831284.16.
O'Rourke
, B.
, Radford
, D.
, and Stanglmaier
, R.
, 2010
, “Tri-Axial Force Measurements on the Cylinder of a Motorised SI Engine Operated on Lubricants of Differing Viscosity
,” ASME J. Eng. Gas Turbines Power
, 132
(9
), p. 092807
.17.
Gore
, M.
, Howell-Smith
, S. J.
, King
, P. D.
, and Rahnejat
, H.
, 2012
, “Measurement of in-Cylinder Friction Using the Floating Liner Principle
,” ASME
Paper No. ICES2012-81028.18.
Gore
, M.
, Theaker
, M.
, Howell-Smith
, S.
, Rahnejat
, H.
, and King
, P. D.
, 2014
, “Direct Measurement of Piston Friction of Internal-Combustion Engines Using the Floating-Liner Principle
,” Proc. Inst. Mech. Eng., Part D
, 228
(3
), pp. 344
–354
.19.
Styles
, G.
, Rahmani
, R.
, Rahnejat
, H.
, and Fitzsimons
, B.
, 2014
, “In-Cycle and Life-Time Friction Transience in Piston Ring–Liner Conjunction Under Mixed Regime of Lubrication
,” Int. J. Engine Res.
, 15
(7
), pp. 862
–876
.20.
Etsion
, I.
, 2005
, “State of the Art in Laser Surface Texturing
,” ASME J. Tribol.
, 127
(1
), pp. 248
–253
.21.
Ronen
, A.
, Etsion
, I.
, and Kligerman
, Y.
, 2001
, “Friction-Reducing Surface-Texturing in Reciprocating Automotive Components
,” Tribol. Trans.
, 44
(3
), pp. 359
–366
.22.
Yu
, X. Q.
, He
, S.
, and Cai
, R. L.
, 2002
, “Frictional Characteristics of Mechanical Seals With a Laser-Textured Seal Face
,” J. Mater. Process. Technol.
, 129
(1
), pp. 463
–466
.23.
Pettersson
, U.
, and Jacobson
, S.
, 2007
, “Textured Surfaces for Improved Lubrication at High Pressure and Low Sliding Speed of Roller/Piston in Hydraulic Motors
,” Tribol. Int.
, 40
(2
), pp. 355
–359
.24.
Rahnejat
, H.
, Balakrishnan
, S.
, King
, P. D.
, and Howell-Smith
, S.
, 2006
, “In-Cylinder Friction Reduction Using a Surface Finish Optimization Technique
,” Proc. Inst. Mech. Eng., Part D
, 220
(9
), pp. 1309
–1318
.25.
Etsion
, I.
, 2010
, “Surface Texturing for In-Cylinder Friction Reduction
,” Tribology and Dynamics of Engine and Powertrain
, H.
Rahnejat
, ed., Woodhead Publishing
, New Delhi, India
.26.
Morris
, N.
, Rahmani
, R.
, and Rahnejat
, H.
, 2011
, “Tribology of Partial Pad Journal Bearings With Textured Surfaces
,” 3rd European Conference on Tribology
, ECOTRIB, pp. 645
–650
.27.
Jiang
, Y.
, Gao
, Y.
, and An
, Q.
, 2014
, “Dynamic Analysis of the Rotor Supported by Journal Bearing With Micro-Spherical Surface Texturing
,” Proc. Inst. Mech. Eng., Part K
, 228
(4
), pp. 355
–365
.28.
Kligerman
, Y.
, Etsion
, I.
, and Shinkarenko
, A.
, 2005
, “Improving Tribological Performance of Piston Rings by Partial Surface Texturing
,” ASME J. Tribol.
, 127
(3
), pp. 632
–638
.29.
Ryk
, G.
, Kligerman
, Y.
, and Etsion
, I.
, 2002
, “Experimental Investigation of Laser Surface Textured for Reciprocating Automotive Components
,” Tribol. Trans.
, 45
(4
), pp. 444
–449
.30.
Ryk
, G.
, Kligerman
, Y.
, Etsion
, I.
, and Shinkarenko
, A.
, 2005
, “Experimental Investigation of Partial Laser Surface Texturing for Piston-Ring Friction Reduction
,” Tribol. Trans.
, 48
(4
), pp. 583
–588
.31.
Ryk
, G.
, and Etsion
, I.
, 2006
, “Testing Piston Rings With Partial Laser Surface Texturing for Friction Reduction
,” Wear
, 261
(7–8
), pp. 792
–796
.32.
Checo
, H. M.
, Ausas
, R. F.
, Jai
, M.
, Cadalen
, J. P.
, Choukroun
, F.
, and Buscaglia
, G. C.
, 2014
, “Moving Textures: Simulation of a Ring Sliding on a Textured Liner
,” Tribol. Int.
, 72
, pp. 131
–142
.33.
Rahmani
, R.
, Shirvani
, A.
, and Shirvani
, H.
, 2010
, “Optimised Textured Surfaces With Application in Piston-Ring/Cylinder Liner Contact
,” Tribology and Dynamics of Engine and Powertrain: Fundamentals, Applications and Future Trends
, H.
Rahnejat
, ed., Woodhead Publishing
, Cambridge, UK
.34.
Rahmani
, R.
, Shirvani
, A.
, and Shirvani
, H.
, 2010
, “An Analytical Approach for Analysis and Optimisation of Slider Bearings With Infinite Width Parallel Textures
,” Tribol. Int.
, 43
(8
), pp. 1551
–1565
.35.
Costa
, H. L.
, and Hutchings
, I. M.
, 2007
, “Hydrodynamic Lubrication of Textured Steel Surfaces Under Reciprocating Sliding Conditions
,” Tribol. Int.
, 40
(8
), pp. 1227
–1238
.36.
Morris
, N.
, Leighton
, M.
, de la Cruz
, M.
, Rahmani
, R.
, Rahnejat
, H.
, and Howell-Smith
, S.
, 2014
, “Combined Numerical and Experimental Investigation of the Micro-Hydrodynamics of Chevron-Based Textured Patterns Influencing Conjunctional Friction of Sliding Contacts
,” Proc. Inst. Mech. Eng., Part J
, 229
(4
), pp. 316
–335
.37.
Rahnejat
, H.
, 1998
, Multi-Body Dynamics: Vehicles, Machines and Mechanisms
, Professional Engineering Publishers (PEP)
, Bury St Edmunds, UK
.38.
Ma
, M.-T.
, Sherrington
, I.
, and Smith
, E. H.
, 1997
, “Analysis of Lubrication and Friction for a Complete Piston-Ring Pack With an Improved Oil Availability Model–Part 1: Circumferentially Uniform Film
,” Proc. Inst. Mech. Eng., Part J
, 211
(1
), pp. 1
–15
.39.
Mishra
, P. C.
, Balakrishnan
, S.
, and Rahnejat
, H.
, 2008
, “Tribology of Compression Ring-to-Cylinder Contact at Reversal
,” Proc. Inst. Mech. Eng., Part J
, 222
(7
), pp. 815
–826
.40.
Patir
, N.
, and Cheng
, H. S.
, 1978
, “An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication
,” ASME J. Tribol.
, 100
(1
), pp. 12
–17
.41.
Spencer
, A.
, Dobryden
, I.
, Almqvist
, N.
, Almqvist
, A.
, and Larsson
, R.
, 2013
, “The Influence of AFM and VSI Techniques on the Accurate Calculation of Tribological Surface Roughness Parameters
,” Tribol. Int.
, 57
, pp. 242
–250
.42.
Gohar
, R.
, and Rahnejat
, H.
, 2008
, Fundamentals of Tribology
, Imperial College Press
, London
.43.
Houpert
, L.
, 1985
, “New Results of Traction Force Calculations in Elastohydrodynamic Contacts
,” ASME J. Tribol.
, 107
(2
), pp. 241
–245
.44.
Dowson
, D.
, and Higginson
, G. R.
, 1959
, “A Numerical Solution to the Elastohydrodynamic Problem
,” J. Mech. Eng. Sci.
, 10
(1
), pp. 6
–15
.45.
Larsson
, R.
, Larsson
, P. O.
, Eriksson
, E.
, Sjöberg
, M.
, and Höglund
, E.
, 2000
, “Lubricant Properties for Input to Hydrodynamic and Elastohydrodynamic Lubrication Analyses
,” Proc. Inst. Mech. Eng., Part J
, 214
(1
), pp. 17
–27
.46.
Arcoumanis
, C.
, Duszynski
, M.
, Flora
, H.
, and Ostovar
, P.
, 1995
, “Development of a Piston-Ring Lubrication Test-Rig and Investigation of Boundary Conditions for Modelling Lubricant Film Properties
,” SAE
Technical Paper No. 952468.47.
Elrod
, H. G.
, 1981
, “A Cavitation Algorithm
,” ASME J. Lubr. Technol.
, 103
(3
), pp. 350
–354
.48.
Gulwadi
, S. D.
, 2000
, “Analysis of Tribological Performance of a Piston Ring Pack
,” Tribol. Trans.
, 43
(2
), pp. 151
–162
.49.
Ruddy
, B. L.
, Dowson
, D.
, and Economou
, P. N.
, 1981
, “A Theoretical Analysis of the Twin-Land Type of Oil-Control Piston Ring
,” Proc. Inst. Mech. Eng., Part C
, 23
(2
), pp. 51
–62
.50.
Heywood
, J. B.
, 1988
, Internal Combustion Engine Fundamentals
, McGraw-Hill
, New York
.51.
Chik
, A. B.
, and Fessler
, H.
, 1966
, “Radial Pressure Exerted by Piston Rings
,” J. Strain Anal. Eng. Des.
, 1
(2
), pp. 165
–171
.52.
Greenwood
, J. A.
, and Tripp
, J. H.
, 1970–1971
, “The Contact of Two Nominally Flat Rough Surfaces
,” Proc. Inst. Mech. Eng., Part C
, 185
(1
), pp. 625
–633
.53.
Teodorescu
, M.
, Balakrishnan
, S.
, and Rahnejat
, H.
, 2005
, “Integrated Tribological Analysis Within a Multi-Physics Approach to System Dynamics
,” Tribol. Interface Sci. Ser.
, 48
, pp. 725
–737
.54.
Briscoe
, B. J.
, and Evans
, D. C. B.
, 1982
, “The Shear Properties of Langmuir-Blodgett Layers
,” Proc. R. Soc. London, Ser. A
, 380
(1779
), pp. 389
–407
.55.
Dowson
, D.
, and Jin
, Z. M.
, 1986
, “Micro-Elastohydrodynamic Lubrication of Synovial Joints
,” Eng. Med.
, 15
(2
), pp. 63
–65
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