Simulation Study on NO and PM Emission Reduction of Engine by Coupled Miller Cycle with Butanol Blending

Abstract

Abstract Trade-off effect of engine emission, that is, NO emission reduction will lead to increase of PM emission. In order to alleviate the contradiction between NO and PM emission, coupling miller cycle with burning butanol was proposed. The simulation model was built by using AVL-FIRE software. The coupling scheme is optimized by changing intake pressure with power performance as constraint condition and emission reduction as evaluation index. Simulation results show that the mixing ratio B30 combined with miller degree M20 scheme matches the intake pressure 0.213MPa well. On a constant power basis, the simultaneous reduction of NO and PM is achieved.