Evaluation of NOx Storage Catalysts for Lean Burn Gasoline Fueled Passenger Cars

1997 ◽  
Author(s):  
N. Fekete ◽  
R. Kemmler ◽  
D. Voigtländer ◽  
B. Krutzsch ◽  
E. Zimmer ◽  
...  
Keyword(s):  
Nox Storage ◽  
Passenger Cars ◽  
Lean Burn ◽  
Nox Storage Catalysts

Optimization of Mode Switching Timing Control for a Lean-Burn Gasoline Engine With a Prototype Passive SCR System

2018 ◽  
Author(s):  
Dakota Strange ◽  
Pingen Chen ◽  
Vitaly Y. Prikhodko ◽  
James E. Parks
Keyword(s):  
Gasoline Engine ◽  
Nox Reduction ◽  
Cost Effective ◽  
Nox Storage ◽  
Mode Switching ◽  
Timing Control ◽  
Lean Burn ◽  
Gasoline Engines ◽  
Effective Manner ◽  
Passive Scr

Passive selective catalytic reduction (SCR) has emerged as a promising NOx reduction technology for highly-efficient lean-burn gasoline engines to meet stringent NOx emission regulation in a cost-effective manner. In this study, a prototype passive SCR which includes an upstream three-way catalyst (TWC) with added NOx storage component, and a downstream urealess SCR catalyst, was investigated. Engine experiments were conducted to investigate and quantify the dynamic NOx storage/release behaviors as well as dynamic NH3 generation behavior on the new TWC with added NOx storage component. Then, the lean/rich mode-switching timing control was optimized to minimize the fuel penalty associated with passive SCR operation. Simulation results show that, compared to the baseline mode-switching timing control, the optimized control can reduce the passive SCR-related fuel penalty by 6.7%. Such an optimized mode-switching timing control strategy is rather instrumental in realizing significant fuel efficiency benefits for lean-burn gasoline engines coupled with cost-effective passive SCR systems.

Sulphur dioxide deactivation of NOx storage catalysts

1999 ◽  
pp. 317-324 ◽  
Author(s):  
Annika Amberntsson ◽  
Björn Westerberg ◽  
Per Engström ◽  
Erik Fridell ◽  
Magnus Skoglundh
Keyword(s):  
Sulphur Dioxide ◽  
Nox Storage ◽  
Nox Storage Catalysts

Platinum dispersion measurements for Pt/BaO/Al2O3, NOx storage catalysts

2005 ◽  
Vol 296 (2) ◽  
pp. 157-168 ◽  
Author(s):  
Jazaer Dawody ◽  
Lisa Eurenius ◽  
Hussam Abdulhamid ◽  
Magnus Skoglundh ◽  
Eva Olsson ◽  
...  
Keyword(s):  
Nox Storage ◽  
Nox Storage Catalysts ◽  
Platinum Dispersion

The Impact of Sulfur Poisoning on NOx-Storage Catalysts in Gasoline Applications

2005 ◽  
Author(s):  
F. Rohr ◽  
S. D. Peter ◽  
E. Lox ◽  
M. Kögel ◽  
W. Müller ◽  
...  
Keyword(s):  
Sulfur Poisoning ◽  
Nox Storage ◽  
Nox Storage Catalysts ◽  
The Impact
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