0
Research Papers: Internal Combustion Engines

Continuous Lubricant Film Thickness Measurement Between Piston Ring and Cylinder Bore

[+] Author and Article Information
Yunus Emre Ayranci

Mechanical Engineering Department,
Istanbul Technical University,
Gumussuyu, Istanbul 34437, Turkey

Ozgen Akalin

Mechanical Engineering Department,
Istanbul Technical University,
Gumussuyu, Istanbul 34437, Turkey
e-mail: akalin@itu.edu.tr

Contributed by the IC Engine Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received October 19, 2017; final manuscript received November 8, 2017; published online April 20, 2018. Editor: David Wisler.

J. Eng. Gas Turbines Power 140(7), 072802 (Apr 20, 2018) (9 pages) Paper No: GTP-17-1569; doi: 10.1115/1.4038818 History: Received October 19, 2017; Revised November 08, 2017

Measurement of film thickness between piston ring and cylinder bore has been a challenge for decades; laser-induced fluorescence (LIF) method was used by several groups, and promising results are obtained for the investigation of lubricant film transport. In this study, blue light generated by a laser source is transmitted to a beam splitter by means of a fiber optic cable and combined with another fiber optic line, then transmitted to the piston ring and cylinder bore conjunction. The light causes the fluorescence dye present in the lubricant to emit light in a longer wavelength, i.e., green. Reflected light is recollected; blue wavelength components are filtered out using a narrow band pass optical filter, and only components in the florescence wavelength is transmitted to a photomultiplier tube. The photomultiplier produces a voltage proportional to instantaneous lubricant film thickness. Then, the photomultiplier signal is calibrated for lubricant film thickness using a laser textured cylinder bore with known geometries. Additional marks were etched on the liner for calibration. The LIF system is adapted to a piston ring and cylinder bore friction test system simulating engine conditions. Static piston ring and reciprocating liner configuration of the bench test system allow the collection of continuous lubricant film thickness data as a function of crank angle position. The developed system has potential to evaluate new designs, materials, and surface properties in a controlled and repeatable environment.

Copyright © 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Tung, S. C. , and Gao, H. , 2003, “ A Study of Break-In Film Development With Different Piston Ring Coatings and Correlation With Electrical Contact Resistance Measurements,” Tribol. Trans., 46(3), pp. 326–331. [CrossRef]
Tamminen, J. , Sandstroma, E. , and Andersson, P. , 2006, “ Influence of Load on the Tribological Conditions in Piston Ring and Cylinder Liner Contacts in a Medium-Speed Diesel Engine,” Tribol. Int., 39(12), pp. 1643–1652. [CrossRef]
Takiguchi, M. , Sasaki, R. , Takahashi, I. , and Ishibashi, F. , 2000, “Oil Film Thickness Measurement and Analysis of a Three Ring Pack in an Operating Diesel Engine,” SAE Paper No. 2000-01-1787.
Dellis, P. C. , 2010, “ Effect of Friction Force Between Piston Rings and Liner: A Parametric Study of Speed, Load, Temperature, Piston-Ring Curvature, and High-Temperature, High-Shear Viscosity,” Proc. Inst. Mech. Eng., Part J, 224(5), pp. 411–425. [CrossRef]
Avan, E. Y. , Spencer, A. , Dwyer-Joyce, R. S. , Almqvist, A. , and Larsson, R. , 2012, “ Experimental and Numerical Investigations of Oil Film Formation and Friction in a Piston Ring–Liner Contact,” Proc. Inst. Mech. Eng., Part J, 227(2), pp. 126–140. [CrossRef]
Smart, A. E. , and Ford, R. A. J. , 1974, “ Measurement of Thin Liquid Films by a Fluorescence Technique,” Wear, 29(1), pp. 41–47. [CrossRef]
Ting, L. L. , 1980, “ Development of a Laser Fluorescence Technique for Measuring Piston Ring Oil Film Thickness,” ASME J. Lubr. Technol., 102(2), pp. 165–170. [CrossRef]
Hoult, D. P. , Lux, J. P. , Wong, V. W. , and Bilian, S. A. , 1988, “Calibration of Laser Fluorescence Measurements of Lubricant Film Thickness in Engines,” SAE Paper No. 881587.
Wong, V. , and Hoult, D. P. , 1991, “Experimental Survey of Lubricant Film Characteristic and Oil Consumption in a Small Diesel Engine,” SAE Paper No. 910741.
Richardson, D. E. , and Borman, G. L. , 1991, “Using Fiber Optics and Laser Fluorescence for Measuring Thin Oil Films With Application to Engines,” SAE Paper No. 912388.
Shaw, B. T. , Hoult, D. P. , and Wong, V. W. , 1992, “Development of Engine Lubricant Film Thickness Diagnostics Using Fiber Optics and Laser Fluorescence,” SAE Paper No. 920651.
Brown, M. A. , McCann, H. , and Thompson, D. M. , 1993, “Characterization of the Oil Film Behavior Between the Liner and Piston of a Heavy-Duty Diesel Engine,” SAE Paper No. 932784.
Phen, R. V. , Richardson, D. , and Borman, G. , 1993, “Measurements of Cylinder Liner Oil Film Thickness in a Motored Diesel Engine,” SAE Paper No. 932789.
Dearlove, J. , and Cheng, W. K. , 1995, “Simultaneous Piston Ring Friction and Oil Film Thickness Measurements in a Reciprocating Test Rig,” SAE Paper No. 952470.
Stiyer, M. J. , and Ghandhi, J. B. , 1997, “Direct Calibration of LIF Measurements of the Oil Film Thickness Using the Capacitance Technique,” SAE Paper No. 972859.
Froelund, K. , Scramm, J. , Noordzij, B. , Tian, T. , and Wong, V. W. , 1997, “An Investigation of the Cylinder Wall Oil Film Development During Warm-Up of an SI Engine Using Laser Induced Fluorescence,” SAE Paper No. 971699.
Takiguchi, M. , Nakayama, K. , Furuhama, S. , and Yoshida, H. , 1998, “Variation of Piston Ring Oil Film Thickness in an Internal Combustion Engine—Comparison Between Thrust and Anti-Thrust Sides,” SAE Paper No. 980563.
Arcoumanis, C. , Duszynski, M. , Lindenkamp, H. , and Preston, H. , 1998, “Measurements of the Lubricant Film Thickness in the Cylinder of a Firing Diesel Engine Using LIF,” SAE Paper No. 982435.
Arcoumanis, C. , Duszynski, M. , Pyke, E. , and Preston, H. , 1998, “Cold-Start Measurements of the Lubricant Film Thickness in the Cylinder of a Firing Diesel Engine,” SAE Paper No. 982436.
Inagaki, H. , Saito, A. , Murakami, M. , and Konomi, T. , 1995, “Development of Two Dimensional Oil Film Distribution Measurement System,” SAE Paper No. 952346.
Thirouard, B. , Tian, T. , and Hart, D. P. , 1998, “Investigation of Oil Transport Mechanisms in the Piston Ring Pack of a Single Cylinder Diesel Engine, Using Two Dimensional Laser Induced Fluorescence,” SAE Paper No. 982658.
Thirouard, B. , and Tian, T. , 2003, “Oil Transport in the Piston Ring Pack (Part I): Identification and Characterization of the Main Oil Transport Routes and Mechanisms,” SAE Paper No. 2003-01-1952.
Picard, M. , Hidaka, H. , Tian, T. , Nishino, T. , Arai, E. , and Ohkubo, M. , 2014, “ Visualization of the Rotary Engine Oil Transport Mechanisms,” SAE Int. J. Engines, 7(3), pp. 1466–1476. [CrossRef]
Baba, Y. , Suzuki, H. , Sakai, Y. , Wei, D. L. T. , Ishima, T. , and Obokata, T. , 2017, “PIV/LIF Measurements of Oil Film Behavior on the Piston in I. C. Engine,” SAE Paper No. 2007-24-0001.
Wigger, S. , Füsser, H. , Fuhrmann, D. , Schulz, C. , and Kaiser, S. , 2016, “ Quantitative Two-Dimensional Measurement of Oil-Film Thickness by Laser-Induced Fluorescence in a Piston-Ring Model Experiment,” Appl. Opt., 55(2), pp. 269–279. [CrossRef] [PubMed]
Akalin, O. , and Newaz, G. M. , 1998, “A New Experimental Technique for Friction Simulation in Automotive Piston Ring and Cylinder Liners,” SAE Paper No. 981407.

Figures

Grahic Jump Location
Fig. 3

Fluorescence spectrum (Coumarin 540 A)

Grahic Jump Location
Fig. 2

Fluorescence spectrum (Coumarin 523)

Grahic Jump Location
Fig. 6

Laser-induced fluorescence system diagram

Grahic Jump Location
Fig. 7

Etched calibration liner segment

Grahic Jump Location
Fig. 8

Optical profiler measurement of a laser honed dimple

Grahic Jump Location
Fig. 9

Surface profiler measurement of an etched mark

Grahic Jump Location
Fig. 10

Laser-induced fluorescence system measured etched mark profile shown in Fig. 9

Grahic Jump Location
Fig. 5

Microscope evaluation of the fiber optic access windows on the piston ring

Grahic Jump Location
Fig. 4

Fiber optic access locations on the piston ring

Grahic Jump Location
Fig. 16

Friction coefficient and film thickness (50 °C)

Grahic Jump Location
Fig. 17

Friction coefficient and film thickness (240 N)

Grahic Jump Location
Fig. 13

Friction coefficient and film thickness (standard)

Grahic Jump Location
Fig. 14

Friction coefficient and film thickness (700 rpm)

Grahic Jump Location
Fig. 15

Friction coefficient and film thickness (30 °C)

Grahic Jump Location
Fig. 11

Laser-induced fluorescence calibration

Grahic Jump Location
Fig. 12

Friction coefficient and film thickness (300 rpm)

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In