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The Effects of Crank Ratio and Crankshaft Offset on Piston Friction Losses
Technical Paper
2003-01-0983
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A study was conducted to understand the effects the specifications of the crank-slider mechanism have on piston friction losses. The information obtained through the study is believed to be useful information for reducing the piston friction. A single-cylinder spark-ignited gasoline engine was designed and constructed to have not only a real-time piston friction measurement system using the floating liner method, but also provisions to facilitate changing the specifications of the crank-slider mechanism. This paper describes the study results obtained under various engine-operating conditions and reports the parametric test results of three crank ratios and five crankshaft-offset amounts tested.
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Citation
Wakabayashi, R., Takiguchi, M., Shimada, T., Mizuno, Y. et al., "The Effects of Crank Ratio and Crankshaft Offset on Piston Friction Losses," SAE Technical Paper 2003-01-0983, 2003, https://doi.org/10.4271/2003-01-0983.Also In
References
- Yoshida H. et al. “Effects of narrow-width, low-tangential-tension, 3-piece oil ring on oil consumption,” JSAE Review 21 21 27 2000
- Rabute R. Tian T. “Challenges Involved in Piston Top Ring Designs for Modern SI Engines,” Proceedings of the ASME 34-1 15 129 2000
- Reipert P. Voigt M. “Simulation of the Piston/Cylinder behavior for Gasoline Engines,” Proceedings of the ASME 35-3 61 70 2000
- Kageyama H. et al. “Study of the Contact Pressure and Deformations of Piston Skirt in Gasoline Engine,” SAE Paper No. 2000-01-1784 2000
- Murakami G. et al. “Analysis of Piston Friction Force under Engine Firing Condition - Effects of Surface Characteristics of Piston Skirt on Friction,” Transactions of The JSAE 22 4 70 73 1991
- Inoue K. et al. “Effects of Lubricant Composition on Fuel Efficiency in Low-Friction Engines,” Proceedings of the JSAE 944 97 100 1994
- Sano S. et al. “Improvement of Thermal Efficiency by Offsetting the Crankshaft Center to the Cylinder Bore Center,” Proceedings of the JSAE 966 129 132 1996
- Furuhama S. Takiguchi M. “Measurement of Piston Friction Force in Actual Operating Diesel Engine,” SAE Transactions 88 1979
- Shibuya N. et al. “Development of a Low Friction Piston with a New Flexible Skirt Structure for a 3.5L V6 Gasoline Engine,” SAE Paper, No. 2002-02-0491 2002
- Hirose K. et al. “The New High Expansion Ratio Gasoline Engine for the TOYOTA Hybrid System - Improving Engine Efficiency with High Expansion Ratio Cycle,” Proceedings of The JSAE 975 29 32 1997