Analysis Of Various Cylinder Fin Designs For A Small-Displacement Engine Used To Power The Superefficient Prototype Vehicle Eco Arrow 3
DOI:
https://doi.org/10.29284/ijasis.12.1s.2026.233-245Keywords:
Internal Combustion Engine, numerical simulation, passive cooling, prototype ICE vehicle for eco-marathon.Abstract
The article presents the results of a simplified analysis of heat processes occurring in the engine of a prototype vehicle participating in an eco-marathon competition. Four fin configurations were examined: the original (75×75 mm), without fins, and two intermediate variants (70×70 mm and 65×65 mm). For the extreme cases, both experimental tests and numerical simulations were conducted, while for the intermediate variants only simulations were performed. The analysis considered solely the case in which airflow was not forced. The measurements enabled the determination of boundary conditions and improved the reliability of the calculations. The results demonstrated a significant influence of finning on heat accumulation, while showing no substantial cooling effect under the analysed conditions. The necessity of maintaining finning to prevent exceeding the critical temperature of 150 °C was confirmed, thereby disproving the assumption that its complete removal would be beneficial. The conclusions provide a basis for further work on optimizing engine design.
References
[1] Wang, Z., Shuai, S., Li, Z., and Yu, W. A Review of Energy Loss Reduction Technologies for Internal Combustion Engines to Improve Brake Thermal Efficiency. Energies 2021, 14 (20), 6656, 2021.
[2] Dahham R. Y., Wei H. and Pan J. Improving Thermal Efficiency of Internal Combustion Engines: Recent Progress and Remaining Challenges, Energies 2022, 15 (17), 6222, 2022
[3] Ju, Y. Understanding cool flames and warm flames. Proceedings of the Combustion Institute, Volume 38, Issue 1, 2021, 83-119.
[4] Goodger E. M. Mechanical Engineer's Reference Book, 12th ed., Warrendale, PA : Society of Automotive Engineers, 1994.
[5] Karamangil M. I., Kaynakli O. and Surmen A. Parametric investigation of cylinder and jacket side convective heat transfer coefficients of gasoline engines, Energy Conversion and Management, Volume 47, Issue 6, 2006, 800-816.
[6] Heywood J. B. Internal combustion engine fundamentals, 2nd ed., McGraw-Hill, Singapore, 1989.
[7] Reyes Y. M., Pilicita J., Domínguez J. and Torresano C. Impact of internal combustion engine overheating on lubricant oil degradation in a 2011 MAZDA bt50 vehicle, Multidisciplinar (Montevideo), 2025, 3-31
[8] Joseph E. A. O., Isaac B. Effect of Heat Expansion in an Internal Combustion Automotive Engine. The International Journal Of Engineering And Science (IJES), Volume 5, Issue 1, 2016, 30-35
[9] Prasad Ch. S. N. Thermal Analysis of Engine failure conditions in engine Overheating cases. International Journal of Research, Volume 4, Issue 17, 2017, 4020-4025
[10] Sakurai, Nakao, Hisano, Tanaka, . et al.. Effects of Engine Cooling System on Engine Performance: Balancing Engine Power and Fuel Consumption, SAE Technical Paper 2022-32-0017, 2022.
[11] Kolunin A. V., Lazarev E. S., Kaminsky V. N. et al. Mathematical model of the condensation process in a cylinder of a piston engine, Tractors and Agricultural Machinery, Eco-Vector 2023, Vol. 90, No. 5
[12] Memon, Z. K.; Sundararajan, T.; Lakshminarasimhan, V.; Babu, Y. R.; Harne, V. Simulation and Experimental Evaluation of Air Cooling for Motorcycle Engine. SAE Technical Paper Series 2006, 2006-32-0099 / 20066599.
[13] Kumar, V.; Singh, O.; Garg, M.; Chaudhary, Y. V. Optimization of Air-Cooling System of 4-Stroke Scooter Engine. Small Engine Technology Conference Milwaukee. SAE Technical Paper Series, 2008, 2008-32-0071 (SAE) / 20084771 (JSAE).
[14] Yoshida M., Ishihara S., Murakami Y. Nakashima et al., Air-cooling effects of fins on a motorcycle engine. JSME International Journal Series B Fluids and Thermal Engineering, 2006, 49.3: 869-875.
[15] Bakchi S., Mustak R., Biswas D., et al., Numerical investigation on optimizing engine cooling using different fin geometry and material on an engine cylinder, Next Research, Volume 2, Issue 3, 2025.
[16] Patel M. S., Vora N. M. Thermal Analysis of I C Engine cylinder fins array using CFD. International Journal of Advance Engineering and Research Development (IJAERD), Volume 1, Issue 5, May 2014
[17] Thornhill D., Graham A., Cunnigham G. et al. Experimental Investigation into the Free Air-Cooling of Air-Cooled Cylinders presented at the Small Engine Technology Conference & Exposition (Sep. 2003), pp. 2003-2032
[18] Mohammadi A., Yaghoubi M. Estimation of instantaneous local heat transfer coefficient in spark-ignition engines International Journal of Thermal Sciences, Volume 49, 2010, 1309-1317
[19] Franco, A,; Martorano, L. Principles for Optimisation of Air Cooling System Applied to the Two-Stroke Engine. SAE Transactions, 1995, Jan 01. 104, 1857-1870.
[20] Kiura, T.; Kushibiki, T.; Shiomi, K. Research on prediction of cooling air flow in small air-cooled utility engines. SAE Technical Papers, 2005, 2005-32-0023.
[21] Szleszyński, Z. (1961) Chłodzenie cieczą pojazdów mechanicznych. Wyd. 1, Warszawa: Wydawnictwa Komunikacji i Łączności
[22] Sadowski, A., Żółtkowski, B., Kałaczyński, T. i Liss, M. (2016) Bilans energetyczny tłokowego silnika spalinowego w aspekcie modelowania i rezerw sprawności. Bydgoszcz: Uniwersytet Technologiczno – Przyrodniczy w Bydgoszczy, Wydział Inżynierii Mechanicznej, Zakład Pojazdów i Diagnostyki
[23] Niewiarowski, K. (1983) Tłokowe silniki spalinowe. Tom I. Wyd. 3 poszerzone i zmienione, Warszawa: Wydawnictwa Komunikacji i Łączności
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This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
