Abstract
Related to the expansion of diesel share in the market, emission problem has become an indispensable obligation of the car makers. In this study, an experimental investigation of commercial DOC (diesel oxidation catalyst), which is designed to reduce the SOF of diesel PM as well as gaseous CO and HC, was performed through engine dynamometer tests, and its numerical modeling was accomplished using the data. In addition, SCR (selective catalytic reduction) system, which reduces diesel NOx, was also modeled and integrated into the DOC. Thus, all kinds of diesel emissions except soot were completely monitored through the developed analytic tools. Based on the simulated results, optimum operating conditions and geometric configurations of diesel after-treatment systems were proposed.
Keywords:Diesel emission, after-treatment system, catalytic reaction, DOC, SCR