Browse Publications Technical Papers 2000-01-0188
2000-03-06

An Integrated SCR and Continuously Regenerating Trap System to Meet Future NOx and PM Legislation 2000-01-0188

The tightening NOx and particulate matter (PM) emission standards for heavy duty diesel powered vehicles are stimulating the development of aftertreatment systems to reduce NOx and PM emissions from such vehicles. Here we present data on a new system which combines NO2-based continuously regenerative trap particulate removal technology with urea-based Selective Catalytic Reduction (SCR) NOx removal technology. There are a number of beneficial synergistic effects associated with combining these two technologies, including a significant improvement in the low temperature NOx removal performance of the SCR system. The development of this PM/NOx control system is described, and the main features of this novel strategy are outlined.
The PM/NOx control system has been evaluated on a number of different engines and over a number of different drive cycles. During testing we have shown that this technology enables simultaneous NOx conversions of 75-90% and PM conversions of 75-90% to be obtained on current engines using both US and European test procedures. These results are presented and discussed.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Achieving Heavy-Duty Diesel NOx/PM Levels Below the EPA 2002 Standards--An Integrated Solution

2000-01-0187

View Details

TECHNICAL PAPER

The Design of Flow-Through Diesel Oxidation Catalysts

930130

View Details

TECHNICAL PAPER

Test Method Development and Understanding of Filter Ring-off-Cracks in a Catalyzed Silicon Carbide (SiC) Diesel Particulate Filter System Design

2008-01-0765

View Details

X