NOx and Particulate Emissions Numerical Simulation of Diesel Blended with Biodiesel

Abstract:

3-D numerical simulation on NOx and soot emissions of 186FA diesel fueling with pure diesel and B20 fuel was carried out by using CFD software FIRE v2008, the generating rule and distribution of NOx and soot of two fuels were described. Through comparison of the measured indicator diagram, the accuracy of the model was verified. Based on the simulation of the original diesel engine fueling with B20, the swirl ratio and injection advance angle were optimized and the technical programs were proposed to reduce two kinds of emissions simultaneously, which optimized the emissions of NOx and soot when the swirl ratio was 2.7 and injection advance angle was 352.5°.