Simulation study of oxygen-enriched cylinder combustion in the zero emissions internal combustion engine

摘要

In order to get the best inlet concentration of the O_2/CO_2 mixture oxygen-enriched combustion in the internal combustion engine, and to improve oxygen-enriched combustion efficiency, this article uses KIVA-3V software, with the former processing program K3PREP and Iprep document which includes all the information of modeling, to complete combustion modeling and generate the burning space grid. Though h k - ε turbulence model, we got the spray and burning process simulation, and then draw the peak curve of peak temperature and pressure under the different intake concentration of O_2/CO_2 mixture air in the internal combustion engine. In this article, it shows the result that the best inlet concentration of the mixture of O_2/CO_2 oxygen-enriched combustion in the internal combustion engine is 24% through the further analysis of the data. Because the pressure and temperature in advance rate, we should take off ignition time, so as to achieve the best combustion characteristics.