Abstract: This paper is to determine the temperature and the stress distributions in a partial ceramic coated spark ignition (SI) engine piston and reduce the mass of the piston for improving engine operating parameters. Our aim of this paper is to determine the temperature and the stress distributions in a partial ceramic coated spark ignition (SI) engine piston. Influence of structure, coating thickness and distributions of stress and temperature were investigated including comparisons with results from an uncoated piston. Thermal analysis is investigated on a conventional (uncoated) SI engine piston, made of steel and Al-Si alloy. Then, thermal analysis is performed on MgO-ZrO2 coated piston by using ANSYS 11.0. Finally, the results of existing piston and modified piston have been compared in order to improve the piston life and weight.

Keywords: Design; Piston; Mgo-Zro2; Thermal; ANSYS