Analysis of Thermal Stresses Acting on Piston of C.I.Engine

generally the piston, made of Al Alloy, is a crucial part of internal combustion engines. When the combustion of fuel takes place in heavy diesel engine cylinder, high temperature and pressure develops. Because of high speed and at high loads, the piston is subjected to high thermal and structural stresses. If these stresses exceed the designed values, failure of piston may take place. The software “Pro-E Wildfire� is used to establish the three-dimensional geometry model of the diesel engine piston. Then, the model is imported into ANSYS to set up a finite element model. In this work thermal stresses on piston is calculated by finite element analysis software. From results, it reveals that thermal stresses are existed on the piston and total deformation with thermal load. The conclusion of this study is that, material type of high thermal conductivity is considered better than material type of low thermal conductivity, because the maximum temperature is found in Carbon- Steel piston than Aluminum -Alloy piston. This means that the Aluminum- Alloy is considered better than the Carbon-Steel. And also due to increase in thermal Conductivity, leads to reduction in temperature at piston crown surface and increase in temperature of piston skirt.