This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of a Reciprocating Test Rig for Tribological Studies of Piston Engine Moving Components - Part I: Rig Design and Piston Ring Friction Coefficients Measuring Method
Annotation ability available
Sector:
Language:
English
Abstract
A reciprocating test rig driven by a slider-crank mechanism has been developed for the purposes of generating piston ring friction coefficient data needed for engine modeling friction loss computations, and for performing basic tribological studies of piston engine moving components, including the piston skirt, in matters of quantity and detail. The ring friction coefficients were measured along a realistic stroke length with the ring in a compressed state and motion in the groove preserved. Ring and liner specimens were prepared from actual engines to ensure that the surface finish and material metallurgy are realistic. A data acquisition and analysis system was also developed. Results are presented in looping type Stribeck friction coefficient vs. Sommerfeld number relations directly applicable for engine modeling friction loss predictions. Such relations can also be used to examine the basic ring friction behavior quantitatively.
Recommended Content
Authors
Topic
Citation
Ting, L., "Development of a Reciprocating Test Rig for Tribological Studies of Piston Engine Moving Components - Part I: Rig Design and Piston Ring Friction Coefficients Measuring Method," SAE Technical Paper 930685, 1993, https://doi.org/10.4271/930685.Also In
References
- Kovach J. T. Tsakiris E. A. Wong L. T. “Engine Friction Reduction for Improved Fuel Economy” SAE Paper 820085 1982
- Hoshi M. “Reducing Friction Losses in Automobile Engines” Tribology Int. 17 4 185 189 1984
- Ting L. L. “A Review of Present Information on Piston Ring Tribology’ SAE Paper 852355 1985
- Rohde S. M. “A Mixed Friction Model for Dynamically Loaded Contacts with Application to Piston Ring Lubrication” Surface Roughness Effects in Hydrody namic and Mixed Lubrication ASME Publication 1950 1980
- Hill S. H. Newman B. A. “Piston Ring Designs for Reduced Friction” SAE Paper 841222 1984
- Fuega L. Bury C. “Piston and Ring Mechanical Losses” VECON'84 173 179 1984
- Barwell F. T. Advances in Friction an Wear Mechanisms” Tribology Int. 17 6 299 307 1984
- Griffiths D. W. Smith D. J. “The Importance of Friction Modifiers in the Formulation of Fuel Efficient Engine Oils” SAE Paper 852112 1985
- Groth K “Neuere Methoden zur Untersuchung von Reibungsverlusten in Motortriebwerken”, (Recent Methods for Investigating Friction Losses in Engine Running Gear) The Motor Industry Research Association Schiff & Hafen 1 30 1977
- Pischinger F. Esch H. J. “Effects of the Number of Cylinders on the Friction Losses of Passenger Car Engines” MTZ 42 12 525 528 1981
- Furuhama S. Sasaki S. “New Device for the Measurement of Piston Frictional Forces in Small Engines” SAE Paper 831284 1983
- Uras H. M. Patterson D. J. “Effect of Some Lubricant and Engine Variables on Instantaneous Piston and Ring Assembly Friction” SAE Paper 840178 1984
- Wade W. R. et al. “Combustion, Friction, and Fuel Tolerance Improvements for the IDI Diesel Engines SAE Paper 840515 1984
- Goto T. et al. “Measurement of Piston and Piston Ring Assembly Friction Force” SAE Paper 851671 1985
- Ball W. F. et al. “The Friction of a 1.6 Litre Automo tive Engine Gasoline and Diesel” SAE Paper 860418 1986
- Gauthier A. et al. “Lubricants Effects on Piston/Ring/Liner Friction in an Instrumented Single Cylinder Diesel Engine” SAE Paper 872034 1987
- Yagi S. et al. “Experimental Analysis of Total Engine Friction in Four Stroke S.I. Engines” SAE Paper 900223 1990
- Rogers G. et al. “Analysis of Potential Improvements in Engine Behavior Due to Ceramic Valve Train Components” SAE Paper 900452 1990
- Ting L. L. “Lubricated Piston Rings and Cylinder Bore Wear” Wear Control Handbook ASME Publication 609 665 1980