Copyright: © the author(s), publisher and licensee Technoscience Academy. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited International Journal of Scientific Research in Science, Engineering and Technology Print ISSN: 2395-1990 | Online ISSN : 2394-4099 (www.ijsrset.com) doi : https://doi.org/10.32628/IJSRSET23103146 492 Optimization of Thermal Analysis of Engine Cylinder Fins by Varying Geometry Rudra Devraja 1 , Dr. Sumita Chaturvedib 2 1 M.Tech Student, Integral University, Lucknow, Uttar Pradesh, India 2 Associate Professor, Integral University, Lucknow, Uttar Pradesh, India A R T I C L E I N F O A B S T R A C T Article History: Accepted: 01 June 2023 Published: 18 June 2023 Heat transfer by convection between a surface and the fluid surrounding can be increased by attaching to the surface called fins. The heat conducted through solids, walls, or boundaries has to be continuously dissipated to the surroundings or environment to maintain the system in a steady state condition. The cylinder of the engine is one of the key components of the vehicle and is prone to maximum temperature variation and thermal stress. To cool the cylinder, the cylinder fin is designed to improve the heat transfer rate. Thermal analysis is done on the engine cylinder fins; it is very useful to understand the heat dissipation in the cylinder. The idea applied in this project is to increase the heat dissipation rate by using intangible working fluid, just air. It is understood that the heat dissipation rate is increased by changing the surface region; therefore, it is very challenging to design such a huge complicated engine. In this project, the analysis of the engine fin is carried out for different geometries such as Rectangular, Triangular, convex, and Tapered fin. A 3D model is created in SolidWorks and analysis is done using ANSYS Software in steady state condition. The material used for the fin body is Al6063. The result is compared to find the best geometry which gives the maximum heat flux. Keywords : Thermal Analysis, Heat transfer, Fins, Varying Geometry, SolidWorks, ANSYS Software. Publication Issue Volume 10, Issue 3 May-June-2023 Page Number 492-506 I. INTRODUCTION The main design of a combustion engine has not changed for 100 years just the efficiency increases every time. Internal Combustion Engines means the combustion takes place internally inside the engine in the cylinder liner. The fire triangle for combustion consists of Oxygen, Fuel, and Heat. There are two types of the engine like 2- strokes generally used in petrol engines (for diesel it’s only in large ships). In this system, the crankshaft rotates once and the piston moves twice in the cylinder space. They are cheap and create a lot of smoke and aren’t that efficient 4 stoke. The other 4 Stroke Engines – are heavy and very