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Calculation of the Piston Assembly Friction: Classification, Validation and Interpretation
Technical Paper
2012-01-1323
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This SAE Technical Paper contains detailed data which are relevant for the calculation of the friction forces of the piston assembly in internal combustion engines. Useful ways of employing calculations besides measurements are exactly classified for the optimization of the piston assembly system in order to reduce friction losses. In the first step the theoretical basics for the calculation of the tribological system are introduced. Referring to the theory, the paper goes into detail about the basic set-up and the modeling degree of the calculation program. Furthermore, measured and calculated curves of friction forces are compared for different operating points. In addition, analysis of the crank-angle resolved friction force are presented with varying engine speeds, oil temperatures and loads and a detailed interpretation of the results is given. Concluding, the overall mechanical losses at the piston assembly are examined with regard to different operating parameters and are presented in the engine map.
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Werner, M., Merkle, A., Graf, S., Holzmüller, R. et al., "Calculation of the Piston Assembly Friction: Classification, Validation and Interpretation," SAE Technical Paper 2012-01-1323, 2012, https://doi.org/10.4271/2012-01-1323.Also In
References
- Karrar, E. Untersuchungen zum Reibungsverhalten und Ölverbrauch der Kolbengruppe von Verbrennungsmotoren Dissertation RWTH Aachen Germany 2009
- Kunkel, S. Werner, M. Wachtmeister, G. “Setting Up a Measuring Device to Determine the Friction of the Piston Assembly,” SAE Int. J. Mater. Manuf. 4 1 340 351 2011 10.4271/2011-01-0227
- Lang, J. Schneider, M. Knoll, G. Kolben-Zylinder-Dynamik I+II. Abschlussbericht Vorhaben Nr. 528, Forschungsvereinigung Verbrennungskraftmaschinen (FVV) Frankfurt M., Germany 1996
- Stribeck, R. Die wesentlichen Eigenschaften der Gleit- und Rollenlager Zeitschrift des Vereins Deutscher Ingenieure 46 1341 1348 1902
- Vogelpohl, G. Betriebssichere Gleitlager. Bd. 1. Grundlagen und Rechnungsgang 2 Auflage Berlin, Ger-many 1967
- Vogelpohl, G. Die Stribeck-Kurve als Kennzeichen des allgemeinen Reibungsverhaltens geschmierter Gleitflächen VDI-Z Zeitschrift des Vereines Deutscher Ingenieure, Band 96 1954 9 VDI Verlag GmbH Düsseldorf 1954
- Lechtape-Grüter, R. Knoll, G. Kolbenringreibung II. Abschlussbericht Vorhaben Nr. 513, Forschungsvereinigung Verbrennungskraftmaschinen (FVV) Frankfurt M., Germany 1993
- Furuhama, S. Sasaki, M. Effect of Oil Properties on Piston Frictional Forces JSAE Review 68 76 1984
- Hersey, M. D. Theory and Research in Lubrication, Foundations for Future Developments New York, London, Sydney John Wiley & Sons 1966
- Greenwood, J. A. Williamson, J. B. P. Contact of Nominally Flat Surfaces. Series A. Mathematical, physical and engineering sciences Proceedings or the Royal Society, London 295 1966
- Greenwood, J. A. Tripp, J. H. The Contact or Two Nominally Flat Rough Surfaces Proc. Instn. Mech. Engrs. 185 1971
- Merkle, A. Kunkel, S. Wachtmeister, G. “Analysis of the Mixed Friction in the Piston Assembly of a SI-Engine,” SAE Technical Paper 2012-01-1333 2012
- Furuhama, S. Takiguchi, M. “Measurement of Piston Frictional Force in Actual Operating Diesel Engine,” SAE Technical Paper 790855 1979 10.4271/790855
- Furuhama, S. Sasaki, S. “New Device for the Measurement of Piston Frictional Forces in Small Engines,” SAE Technical Paper 831284 1983 10.4271/831284
- Kessen, U. Tribologische Untersuchungen an der Kolbengruppe eines Dieselmotors bei hohen Mitteldrücken Dissertation Universität Hannover Germany 1999