Abstract—The isotherms of cooper coated 4 stroke variable compression ratio petrol engines with pure gasoline operation and compared with conventional engine. The variation of Isotherms and heat flux with respect to radius, height of piston, liner, cylinder head and thermal analysis is also attempted in this paper. Copper coated engine showed higher temperature at salient points when compared with conventional engine at salient points like, on the top of the piston and liner. Temperatures were determined below SIT of the fuel. Deterioration of lube oil was not observed as temperatures were lower than the required combustion chamber wall temperature and this was found out so as to substitute in the equations of combustion model. First thermal analysis was done and analysed the temperature distribution over the convectional engine and copper coated convectional engine. In the second stage structural analysis was carried out using the thermal loads obtained in the first stage. Three different types of materials were taken for analysis.

Index Terms—CATIA, ANSYS, Thermal analysis, Structural analysis, Copper coating, Piston head

Cite: K Ramesh Babu, G Guru Mahesh, and G Harinath Gowd, "Modeling and Thermal Analysis of SI Engine Piston Using FEM," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 1, pp. 265-271, January 2014.