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Improvement of NOx Reduction Rate of Urea-SCR System by NH3 Adsorption Quantity Control
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 06, 2008 by SAE International in United States
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A urea SCR system was combined with a DPF system to reduce NOx and PM in a four liters turbocharged with intercooler diesel engine. Significant reduction in NOx was observed at low exhaust gas temperatures by increasing NH3 adsorption quantity in the SCR catalyst. Control logic of the NH3 adsorption quantity for transient operation was developed based on the NH3 adsorption characteristics on the SCR catalyst. It has been shown that NOx can be reduced by 75% at the average SCR inlet gas temperature of 158 deg.C by adopting the NH3 adsorption quantity control in the JE05 Mode.
CitationMurata, Y., Tokui, S., Watanabe, S., Daisho, Y. et al., "Improvement of NOx Reduction Rate of Urea-SCR System by NH3 Adsorption Quantity Control," SAE Technical Paper 2008-01-2498, 2008, https://doi.org/10.4271/2008-01-2498.
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