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Ring Dynamics in a Diesel Engine and Its Effect on Oil Consumption and Blow by
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English
Abstract
Measurements of cylinder and inter-ring pressures and top ring axial movement were made on a 4-stroke V8 diesel engine running at full power, in order to understand differences in observed oil consumption and blowby for 5 different ring and piston combinations. In each case the parameters were also calculated using a newly developed computer program which combines the effects of ring lift and twist, inter-ring gas pressures, ring profile and tension and liner finish on ring hydrodynamics and gas flow. Encouraging correlation was shown between measured and predicted results.
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Citation
Truscott, R., Reid, T., and Ruddy, B., "Ring Dynamics in a Diesel Engine and Its Effect on Oil Consumption and Blow by," SAE Technical Paper 831282, 1983, https://doi.org/10.4271/831282.Also In
State-Of-The-Art on Design and Performance of Diesel Power Cylinder Components
Number: SP-0552; Published: 1983-09-01
Number: SP-0552; Published: 1983-09-01
References
- McGeehan J.A. “A Survey of the Mechanical Design Factors Affecting Engine Oil Consumption” SAE Paper 790864 1979
- Furuhama S. Hiruma M. “Piston Ring Motion and the Influence on Engine Tribology” SAE Paper 790860 1979
- Curtis J.M. “Piston Ring Dynamics and its Influence on the Power Cylinder Performance” SAE Paper 810935 1981
- Munro R. “Blowby in Relation to Piston and Ring Features” SAE Paper 810932 1981
- Moore S.L. Hamilton G.M. “The Piston Ring at Top Dead Centre” I Mech E Proc. 194 36 1980 373 381
- Parker D.A., et al “Experimental Measurements of the Quantities Necessary to Predict Piston Ring-Cylinder Bore Oil Film Thickness and of the Oil Film Thickness Itself in Two Particular Engines” I Mech E Conference “Piston Ring Scuffing” 1975 79 98
- Parker D.A., et al “Progress in Understanding and Control of Ring Lubrication” ASME Paper 78-DGP-25 1978
- Parker D.A. Adams D.R. “Friction losses in the Reciprocating Internal Combustion Engine,” I.Mech E Conference “Tribology - Key to the Efficient Engine,” 1982
- Ruddy B.L., et al “Piston Ring Lubrication, Part III. The influence of Ring Dynamics and Ring Twist”, in “Energy Conservation through Fluid Film Lubrication Technology: Frontiers in Research and Design” ASME Winter meeting 1979 191 215
- Allen D.G., et al “Prediction of Cylinder Bore Oil Film Thickness in Two Particular Engines” I. Mech. E. Conference “Piston Ring Scuffing” 1975 107 124
- Rhode S.M. “A Mixed Friction Model for Dynamically Loaded Contacts with Application to Piston Ring Lubrication” Proceedings of the 7th Leeds-Lyon Symposium on Tribology Leeds 1980
- Ruddy B.L., et al “A Theoretical Analysis of the Twin-Land Type of Oil-Control Piston Ring” J.Mech. Eng. Sci. 23 2 1981 51 62
- Patir N. Cheng H.S. “An Average Flow Model for Determining the Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication” J Lubric Technical 100 Jan 1978 12 17
- Greenwood J.A. Tripp J.H. “The Contact of Two Nominally Flat Surfaces” I.Mech.E.Proc 185 625 633 1971
- Eweis M. “Reibungs-und Undichtigkeitsverluste an Kolbenringen” Forschungshefte des Vereins Deutscher Ingenieure, No.371 1935
- Ting L.L. Mayer J.E. Jr. “Piston Ring Lubrication and Cylinder Bore Analysis. Part I - theory, Part II -theory verification” J.Lubric Technol 96 1974 258 266
- Furuhama S. Tada T. “On the Flow of Gas through the Piston rings (1st Report, The Discharge Coefficient and Temperature of Leakage Gas)” Bul. JSME 4 16 1961 684 698
- Richard G.P. “Lubricant Properties in the Diesel Engine Piston Ring Zone” Presented at 9th Leeds/Lyon Symposium - “Tribology of Reciprocating Engines” 1982
- Graham N.A. Kendrick M. “Developments in Engine Instrumentation” A.E Symposium 1982
- Ruddy B.L., et al “Review of Piston Ring Studies” Presented at the 9th Leeds/Lyon Symposium - “Tribology of Reciprocating Engines” 1982