Technical Advantages of Urea SCR for Light-Duty and Heavy-Duty Diesel Vehicle Applications 2004-01-1292
The 2007 emission standards for both light-duty and heavy-duty diesel vehicles remain a challenge. A level of about 90% NOx conversion is required to meet the standards. Technologies that have the most potential to achieve very high NOx conversion at low temperatures of diesel exhaust are lean NOx traps (LNTs) and Selective Catalytic Reduction (SCR) of NOx using aqueous urea, typically known as Urea SCR. The LNT has the advantage of requiring no new infrastructure, and does not pose any new customer compliance issues. However, Urea SCR has high and durable NOx conversion in a wider temperature window, a lower equivalent fuel penalty, and lower system cost. On a technical basis, Urea SCR has the best chance of meeting the 2007 NOx targets. This paper reviews the results of some demonstration programs for both light-and heavy-duty applications.
Citation: Lambert, C., Hammerle, R., McGill, R., Khair, M. et al., "Technical Advantages of Urea SCR for Light-Duty and Heavy-Duty Diesel Vehicle Applications," SAE Technical Paper 2004-01-1292, 2004, https://doi.org/10.4271/2004-01-1292. Download Citation
Author(s):
Christine Lambert, Robert Hammerle, Ralph McGill, Magdi Khair, Christopher Sharp
Affiliated:
Ford Research & Advanced Engineering, Southwest Research Institute
Pages: 12
Event:
SAE 2004 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Diesel Exhaust Emission Control-SP-1860, Diesel Exhaust Aftertreatment 2000-2007-PT-126, SAE 2004 Transactions Journal of Fuels and Lubricants-V113-4
Related Topics:
Selective catalytic reduction
Lean NOx traps
Diesel exhaust emissions
Environmental regulations and standards
Nitrogen oxides
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