The air in cities has been heavily polluted by vehicle emissions. Above all, exhaust gases of diesel engines is the principal cause of these air pollutions. DOC is used to reduce harmful emissions, such as HC, CO and PM. But PM reduction rate of DOC i...
The air in cities has been heavily polluted by vehicle emissions. Above all, exhaust gases of diesel engines is the principal cause of these air pollutions. DOC is used to reduce harmful emissions, such as HC, CO and PM. But PM reduction rate of DOC is not enough. DPF is necessary to reduce PM and satisfy regulations. Metal foam is the one of promising materials in process on researches. Metal foam filter is available to use with catalytic coating. In case of catalytic metal foam, it reduce efficiency of PM reduction. In this study, we research the cause why efficiency of PM reduction is been worse and find out the most suitable condition.