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

Development of NOx Storage Reduction System for a Dimethyl Ether Engine

2004 ◽  
Author(s):  
Seang-wock Lee ◽  
Yoshio Sato ◽  
Toshimitsu Takayanagi ◽  
Akira Noda ◽  
Toshiro Yamamoto
Keyword(s):  
Dimethyl Ether ◽  
Nox Storage ◽  
Nox Storage Reduction ◽  
Reduction System

Development of NOx Storage Reduction System for a Heavy-Duty Dimethyl Ether Engine

2005 ◽  
Author(s):  
Seang-wock Lee ◽  
Yoshio Sato ◽  
Toshimitsu Takayanagi ◽  
Hisakazu Suzuki
Keyword(s):  
Dimethyl Ether ◽  
Nox Storage ◽  
Heavy Duty ◽  
Nox Storage Reduction ◽  
Reduction System

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

Combined Fixed-Bed Reactor and In Situ DRIFTS Tests of NO Adsorption on a NOx Storage-Reduction System Catalyst

2013 ◽  
Vol 37 (2) ◽  
pp. 204-212 ◽  
Author(s):  
Dong L. Wu ◽  
Valerie Tschamber ◽  
Lionel Limousy ◽  
Laure Michelin ◽  
Alexandre Westermann ◽  
...  
Keyword(s):  
Fixed Bed ◽  
Nox Storage ◽  
Fixed Bed Reactor ◽  
No Adsorption ◽  
In Situ Drifts ◽  
Nox Storage Reduction ◽  
Reduction System

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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