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Development of Air-Cooled Cylinder by Utilizing Natural Convection
Technical Paper
2005-01-1385
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An air-cooled engine with a finned cylinder may have residual heat between the fins. Residual heat decreases heat release from the cylinder when cooling air is not forced over the engine. In order to induce natural convection in the cylinder, cooling ports were drilled in the fins parallel to the cylinder axis to determine if residual heat could be decreased and additional cylinder cooling could be developed. The effects of the fin configurations on air-cooling were investigated to utilize the cooling ports for a stationary engine and a non-moving motorbike engine.
The experimental cylinder design permitted variation in the number of fins and fin pitch. Numbers of fins that had various port sizes and port positions were investigated; in addition, the temperature inside of the cylinder and in the space between the fins was measured. Results indicated that heat release from the cylinder was increased by utilizing the fins with ports as compared to the fins without ports. It was also found that fin pitch, number of fins, port size, port position, and number of ports have significant effects on cylinder temperature. These results can be utilized to improve the design of an air-cooled cylinder by utilizing natural convection.
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Yoshida, M., Ishihara, S., Nakashima, K., and Yamamoto, M., "Development of Air-Cooled Cylinder by Utilizing Natural Convection," SAE Technical Paper 2005-01-1385, 2005, https://doi.org/10.4271/2005-01-1385.Also In
References
- Schey, O. W. Biermann, A. E. Heat Dissipation from a Finned Cylinder at Different Fin-Plane / Air-Stream Angles NACA Technical Notes No. 429 1932
- Biermann, A. E. Pinkel, B. Heat Transfer from Finned Metal Cylinders in an Air Stream NACA Report No. 488 1935
- Schey, O. W. Rollin, V. G. The Effect of Baffles on the Temperature Distribution and Heat-Transfer Coefficients of Finned Cylinders NACA Report No. 511 1936
- Biermann, A. E. Heat Transfer from Cylinders Having Closely Spaced Fins NACA Technical Notes No. 602 1937
- Brevoort, M. J. Rollin, V.G. Air Flow around Finned Cylinders NACA Report No.555 1937
- Ellerbrock, H. H. Biermann, A. E. Surface Heat-Transfer Coefficients of Finned Cylinders NACA Report No. 676 1939
- Biermann, A. E. Ellerbrock, H. H. The Design of Fins for Air-Cooled Cylinders NACA Report No. 726 1941
- Pai, B. U. Samaga, B. S. Mahadevan, K. Some Experimental Studies of Heat Transfer from Finned Cylinders of Air-Cooled I. C. Engines 4 th National Heat Mass Transfer Conference 137 144 1977
- Thornhill, D. May, A. An Experimental Investigation into the Cooling of Finned Metal Cylinders, in a Free Air Stream SAE Paper No. 1999-01-3307 1999
- Thornhill, D. Graham, A. Cunnigham, G. Troxier, P. Meyer, R. Experimental Investigation into the Free Air-Cooling of Air-Cooled Cylinders SAE Paper No. 2003-32-0034 2003