Control strategy research of a selective catalytic reduction system for heavy-duty application

2017 ◽  
Vol 22 (5) ◽  
pp. 577-588
Author(s):  
Tiantian Wang ◽  
Feng Lin ◽  
Jie Hu ◽  
Yuqiang Ke ◽  
Yueqiu Zhang
Keyword(s):  
Selective Catalytic Reduction ◽  
Control Strategy ◽  
Catalytic Reduction ◽  
Heavy Duty ◽  
Strategy Research ◽  
Selective Catalytic Reduction System ◽  
Reduction System

Effects of a zeolite-selective catalytic reduction system on comprehensive emissions from a heavy-duty diesel engine

2018 ◽  
Author(s):  
Z. Gerald Liu ◽  
Devin R. Berg ◽  
James J. Schauer‡
Keyword(s):  
Diesel Engine ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Oxidation Catalyst ◽  
Heavy Duty ◽  
Aftertreatment System ◽  
Selective Catalytic Reduction System ◽  
Reduction System ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

The effects of a zeolite urea-selective catalytic reduction aftertreatment system on a comprehensive spectrum of chemical species from diesel engine emissions were investigated in the present study. Representative samples were collected with a newly developed source dilution sampling system after an aging process designed to simulate atmospheric dilution and cooling conditions. Samples were analyzed with established procedures and compared between the measurements taken from a baseline heavy-duty diesel engine and also from the same engine equipped with the exhaust aftertreatment system. The results have shown significant reductions for nitrogen oxides, carbon monoxide, total hydrocarbons, polycyclic aromatic hydrocarbons, and organic carbon emissions. Additionally, less significant yet notable reductions were observed for particulate matter mass and metals emissions. Although two ionic compounds, sulfate and nitrate, displayed increased emission levels, the production of new species was not observed with the addition of the zeolite urea-selective catalytic reduction system joined with a downstream oxidation catalyst.

Nonlinear black box identification of a Selective Catalytic Reduction system

2011 ◽  
Vol 44 (1) ◽  
pp. 11845-11850 ◽  
Author(s):  
Soma Tayamon ◽  
Darine Zambrano ◽  
Torbjörn Wigren ◽  
Bengt Carlsson
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Black Box ◽  
Selective Catalytic Reduction System ◽  
Reduction System
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