G0700-1-5 Combination of low temperature with rare combustion and high temperature with rich combustion for diesel engine

Abstract

In this study, premixed compressed ignition and high temperature diffusion combustion were combined to reduce the emissions of soot and NOx simultaneously in a diesel engine.To establish the combustion methods, we applied two-stage injection. The premixed combustion was ignited in the lststage of the injection without emissions of soot and NOx and then a high temperature field was created.This achieved the high temperature diffusion combustion in the 2nd stage of the injection with very low emission of soot and NOx. As a result, PM and NOx were much more reduced simultaneously compared to conventional combustions.