Combination and Integration of DPF-SCR Aftertreatment Technologies
EMSL Project ID
34924
Abstract
Exhaust aftertreatment is considered an enabler for widespread implication of higher fuel efficient diesel engines. In the last decade extensive research has resulted in the development and advancement of many aftertreatment technologies; though lean-NOx traps (LNT), urea selective catalytic reduction (SCR), and diesel particulate filtration (DPF) are considered the most mature and top choices at present. Despite the significant research invested in these three technologies, studies of each independently suggest that operating conditions for one may not be optimal for the others, hence the possibly of limited function and performance if the devices were run in series of each other in an exhaust stream. Furthermore, DPF is the only technology that addresses abatement of particulate matter (PM) from the exhaust stream; where the others deal with NOx reduction exclusively. As such, it is anticipated that for the 2010 model year and beyond diesel vehicle regulations will indeed require a combination of either SCR or LNT with a DPF unit.Here is it proposed using various EMSL surface-science capabilities to further the understanding of the interaction of an SCR phase with a DPF filter, including the interaction with hydrocarbons and accumulated soot. These capabilities include PTR-MS, Raman, XRD, TEM, Al NMR, and transmittance FT-IR.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2009-10-06
End Date
2011-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members