Abstract
This study proposes the selective recirculation of NOx in burnt gas by using NOx absorption catalyst in order to promote oxidation reaction of natural gas in HCCI engines. In this study, the feasibility of proposed technique in which absorbed NO was regenerated using a fuel as a reductant was investigated on a small reactor with NOx absorption catalyst for commercial vehicles. The effect of reaction temperature and chemical spices of reductant were investigated in regeneration process. As a result, 25% of NO absorbed on a catalyst was able to be regenerated.
