Thermal strength and transient dynamics analysis of a diesel engine piston

As the research object is to set up four-stroke direct injection diesel engine pistons, with the research method of thermo-mechanical coupling, a three-dimensional finite element analysis model is established. Calculate transient heat transfer coefficient and the transient gas temperature. Piston stress is calculated under the conditions of thermal load, mechanical load and the thermal-mechanical coupling load. Results show that, the piston safety, the main cause of the piston deformation and the great stress is the temperature so it is feasible to further decrease the piston temperature with structure optimization.