Comparison of DOC-based vs. NOx storage-based aftertreatment architectures as related to pollutants conversion efficiency and GHG impact
摘要
Besides reaching lower tailpipe emissions, upcoming regulations are likely to require lower CO2 values and, at the same time, limit other GHG (such as N2O and CH4) over RDE cycles. Focusing on light commercial vehicles, the present work will show a comparison (relying on an extensive testing campaign) of aftertreatment architectures based on DOC and NOx trapping coupled with SDPF. Strengths and weaknesses of the different architectures will be highlighted with special regard to GHG contribution as related to aftertreatment efficiency.