Development of NOx Storage-Reduction 3-Way Catalyst System (II): NOx Reduction Mechanism and Improvement of Conversion Efficiency

JSAE Review ◽  
1995 ◽  
Vol 16 (1) ◽  
pp. 108
Author(s):  
T Tanaka
Keyword(s):  
Conversion Efficiency ◽  
Nox Reduction ◽  
Catalyst System ◽  
Nox Storage ◽  
Reduction Mechanism ◽  
Nox Storage Reduction

Impact of dopants on the sulfation, desulfation and NOx reduction performance of Ba-based NOx storage-reduction catalysts☆

2011 ◽  
Vol 160 (1) ◽  
pp. 131-136 ◽  
Author(s):  
Todd J. Toops ◽  
Nathan A. Ottinger ◽  
Chengdu Liang ◽  
Josh A. Pihl ◽  
E. Andrew Payzant
Keyword(s):  
Nox Reduction ◽  
Nox Storage ◽  
Nox Storage Reduction ◽  
Nox Storage Reduction Catalysts ◽  
Reduction Catalysts

Influence of ceria on the NOx reduction performance of NOx storage reduction catalysts

2013 ◽  
Vol 142-143 ◽  
pp. 89-100 ◽  
Author(s):  
Zafer Say ◽  
Evgeny I. Vovk ◽  
Valerii I. Bukhtiyarov ◽  
Emrah Ozensoy
Keyword(s):  
Nox Reduction ◽  
Nox Storage ◽  
Nox Storage Reduction ◽  
Nox Storage Reduction Catalysts ◽  
Reduction Catalysts

Highly Durable NOx Reduction System and Catalysts for NOx Storage Reduction System

1998 ◽  
Author(s):  
Tadao Nakatsuji ◽  
Ritsu Yasukawa ◽  
Keichi Tabata ◽  
Toshihiro Sugaya ◽  
Kazuyuki Ueda ◽  
...  
Keyword(s):  
Nox Reduction ◽  
Nox Storage ◽  
Nox Storage Reduction ◽  
Reduction System

Study of 2-LEG NOx Storage-Reduction Catalyst System for HD Diesel Engine

2006 ◽  
Author(s):  
Ichiro Tsumagari ◽  
Hiroshi Hirabayashi ◽  
Yoshihide Takenaka ◽  
Mitsuru Hosoya ◽  
Masatoshi Shimoda
Keyword(s):  
Diesel Engine ◽  
Catalyst System ◽  
Nox Storage ◽  
Nox Storage Reduction

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.

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