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The Influence of Sinusoidal Piston Motion on the Thermal Efficiency of Engines
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English
Abstract
A new technique of translating linear to rotary motion, using the Stiller- Smith mechanism, can be applied to the design of internal combustion engines and compressors. This new mechanism produces purely sinusoidal motion of the pistons relative to crank angle, which is a different motion from that produced by a conventional slider-crank mechanism, Influence of this sinusoidal motion on thermodynamic performance of engines and compressors was investigated theoretically and experimentally. Data are presented from a numerical analysis of compression and of spark-ignited combustion. Also, pressure-time curves for a standard and a modified (long connecting rod) spark ignition engine are compared. All data confirm that there is little thermodynamic difference between the Stiller-Smith and slider-crank devices.
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Authors
- Nigel N. Clark - West Virginia Univ. Morgantown, WV
- James E. Smith - West Virginia Univ. Morgantown, WV
- Aaron George - West Virginia Univ. Morgantown, WV
- Patricia Hurter - West Virginia Univ. Morgantown, WV
- Randolph Churchill - West Virginia Univ. Morgantown, WV
- Paul Sickles - West Virginia Univ. Morgantown, WV
- S. Eugene Messenger - West Virginia Univ. Morgantown, WV
- A. D. McKisic - West Virginia Univ. Morgantown, WV
- Jan W. Van Egmond - West Virginia Univ. Morgantown, WV
- Kwi Y. Lee - Technical Center Daewoo Motors Co., Ltd. Inchon, Korea
Citation
Clark, N., Smith, J., George, A., Hurter, P. et al., "The Influence of Sinusoidal Piston Motion on the Thermal Efficiency of Engines," SAE Technical Paper 871916, 1987, https://doi.org/10.4271/871916.Also In
References
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- Smith, J.E. Clark, N.N. Craven, R. Churchill, R. “Advances in Stiller- Smith Engine Design” SAE Conference Melbourne, Australia 1987
- Smith, J.M. Van Ness, N.C. “Introduction to Chemical Engineering Themodynamics” McGraw-Hill 1975
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