Study The Internal Combustion Engine Exhaust Energy Recovery Technology Based On Stirling Cycle

With the development of modern automobile industry, the consumption of energy increasing day after day and energy conservation is getting more and more attention by people, many scholars at home and abroad have carried out the research of automotive waste heat recovery technology. Stirling engine has more advantage in the fields of waste heat recovery, because of its adaptation of multi-fuel, good environmental performance and high conversion efficiency. The research of using stirling cycle to recovery the engine exhaust energy has great significance in energy conservation, emission reduction and improves the energy utilization efficiency.According to the five-parts adiabatic cylinder model of stirling engine, this paper set up a mathematical simulation model of stirling cycle by means of Matlab/Simulink, adding the flow resistance losing calculation module and modifying the calculation method. After verifying the module and considering the features of engine exhaust energy, we drew up a preliminary design for the basic structural parameters of the stirling engine, simulated the process of stirling cycle, analyzed the effect of different parameters of the cycle performance, and calculated the basic power and indicated power of the engine, which can provide an effective reference for stirling engine design and performance optimization, as well as the research of utilizing stirling cycle to recovery the engine exhaust energy.This paper also attempts to associate one-dimensional gas dynamics analysis software GT-Power with dynamic system simulation tool Matlab/Simulink, looking for the combined cycle simulation method of internal combustion and stirling engine, analyzing the changes of stirling engine along with the various of diesel engine working condition, and paved the way for the research of using stirling cycle to recover exhaust energy. Based on the calculation and analysis, we conceive the idea of making an Internal Combustion & Stirling Engine. The new combined engine could significantly improve the energy utilization as well as the power and economy performance, which will have great reference value in the fields of engine exhaust energy recovery.