This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
NOx-Trap Catalyst Development for Mitsubishi 1.8L GDI™ Application
Technical Paper
2003-01-3078
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A new single-brick Ba + alkali metals NOx-Trap catalyst has been developed to replace a two-brick NOx-Trap system containing a downstream three-way catalyst. Major development efforts include: 1) platinum group metals selection for higher HC oxidation with potassium-containing washcoat, 2) alumina and ceria selection, and Rh architecture design for more efficient NOx reduction and 3) NiO to suppress H2S odor. Mitsubishi Motors' 1.8L GDI™ with this Delphi new NOx-Trap catalyst with H2S control achieves J-LEV standard with less cost and lower backpressure compared to the previous model. It is further discovered that incorporation of NiO into the NOx-Trap washcoat is effective for H2S control during sulfur purge but has a negative impact on thermal durability and sulfur resistance. Further study to improve this trade-off has been made and preliminary results of an advanced washcoat design are presented in this paper. Details will be reported in a future publication.
Authors
Citation
Dou, D., Miyaura, S., Dogahara, T., Kikuchi, S. et al., "NOx-Trap Catalyst Development for Mitsubishi 1.8L GDI™ Application," SAE Technical Paper 2003-01-3078, 2003, https://doi.org/10.4271/2003-01-3078.Also In
Emissions: Advanced Catalyst and Substrates, Measurement and Testing, Diesel Gaseous Emissions
Number: SP-1801; Published: 2003-10-31
Number: SP-1801; Published: 2003-10-31
References
- Miyoshi N. Matsumoto S. Katoh K. Tenaka T. Harada J. Takhashi N. Yokota K. Sugiura M. Kasahara K. “Development of New Concept Three-Way Catalyst for Automotive Lean-Burn Engines” SAE 950809 1995
- Brogan M.S. Brisley R.J. Walker A.P. Webster D.E. Boegner W. Fekete N.P. Krämer M. Krutzsch B. Voigtlãnder D. “Evaluation of NOx Storage Catalysts as an Effective System for NOx Removal from the Exhaust Gas of Lean Burn Gasoline Engines” SAE 952490 1995
- Brogan M.S. Brisley R.J. Moore J.S. Clark A.D. “Evaluation of NOx Adsorber Catalysts Systems to Reduce Emissions of Lean Running Gasoline Engines” SAE 962045 1996
- Takahashi N. Shinjoh H. Iijima T. Suzuki T. Yamazaki K. Yokota Koji Suzuki H. Miyoshi N. Matsumoto S. Tanizawa T. Tanaka T. “The New Concept 3-way Catalyst for Automotive Lean-burn Engine: NOx Storage and Reduction Catalysts” Catalysis Today 27 63 69 1996
- Strehlau W. Leyrer J. Lox E.S. Kreuzer T. Hori M. Hoffmann M. “New Developments in Lean NOx Catalysis for Gasoline Passenger Cars in Europe” SAE 962047 1996
- Hepburn J.S. Thanasiu E. Dobson D.A. Watkins W.L. “Experimental and Modeling Investigations of NOx-Trap Performance” SAE 962051 1996
- Bailey O.H. Dou D. Denision G.W. “Regeneration Strategies for NOx Adsorber Catalysts” SAE 972845 1997
- Fekete N. Kemmler R. Voigtländer D. Krutzsch B. Zimmer E. Wenninger G. Strehlau W. van den Tillaart J.A.A Leyrer J. Lox E.S. Müller W. “Evaluation of NOx Storage Catalysts for Lean Burn Gasoline Fueled Passenger Cars” SAE 970746 1997
- Brogan M.S. Clark A.D. Brisley R.J. “Recent Progress in NOx-Trap Technology” SAE 980933 1998
- Kisenyi J.M. Cumming B. Stark R. Marshall R.A Gibbons E.F. “Correlation between Dynaomometer- and Vehicle-Aged Catalysts for Automotive Lean-Burn Applications” SAE 980934 1998
- Dou D. Bailey O.H. “Investigation of NOx Adsorber Catalyst Deactivation” SAE Paper 982594 1998
- Dearth M. Hepburn J. S. Thanasiu E. McKenzie J. Horne G.S. “Sulfur Interaction with Lean NOx- Traps: Laboratory and Engine Dynamometer Studies” SAE 982595 1998
- Ikeda Y. Sobue K. Tsuji S. Matsumoto S. “Development of NOx Storage-Reduction Three-way Catalyst for D4 Engines” SAE 1999-01-1279
- Goebel U. Hoehne J. Lox E.S. Mueller W. Okumura A. Strehlau W. Hori M. “Durability Aspects of NOx Storage Catalysts for Direct Injection Gasoline Vehicles” SAE 99FL-103 1999
- Erkfeldt S. Larsson M. Hedblom H. Skoglundh M. “Sulfur Poisoning and Regeneration of NOx-Trap Catalyst for Direct Injected Gasoline Engines”
- Asanuma T. Takeshima S. Yamashita T. Tanaka T. Murai T. Iguchi S. “Influence of Sulfur Concentration in Gasoline on NOx Storage-Reduction Catalyst” SAE 1999-01-3501 1999
- Hodjati Sh. Semelle F. Moral N. Bert C. Rigaud M. “Impact of Sulfur on the NOx-Trap Catalyst Activity-poisoning and Regeneration Behavior” SAE 2000-01-1874 2000
- Hachisuka I. Hirata H. Ikeda Y. Matsumoto S. “De-activation Mechanism of NOx storage-Reduction Catalyst and Improvement of Its performance” SAE 2000-01-1196 2000
- Asik J.R. Meyer G.M. Dobson D. “Lean NOx-Trap Desulfation Through Rapid Air Fuel Modulation” SAE 2000-01-1200 2000
- Bailey O.H. Dou D. Molinier M. “Sulfur Traps for NOx Adsorbers: Materials Development and Maintenance Strategies for Their Application” SAE 2000-01-1205 2000
- Ohno H. Takanohashi T. Takaoka N. Kuroda O. Iizuka H. “NOx Conversion Properties of a Mixed Oxide Type Lean NOx Catalyst” SAE 2000-01-1197 2000
- Balland J. Frugier J. Schreurs B. “Impact of NOx Adsorber Regeneration on Fuel Economy” Berlin Symposium 2000
- Glück K.H. Göbel U. Hahn H. Höhne J. Krebs R. Kreuzer T. Pott E. “Cleaning the Exhaust Gas of Volkswagen FSI Engines” MTZ Motortechnische Zeitshrift 61 6 2000
- Mai 2000
- Cutler W.A. Day J.P. “Mechanical Durability of Cordierite-based NOx Adsorber/catalyst Systems for Lean Burn Gasoline Applications” SAE 1999-01-3500 1999
- Iwachido K. Tanada H. Wantanabe T. Yamada N. Nakayama O. Ando H. Hori M. Taniguchi S. Noda N. Abe F. “Development of the NOx Adsorber Catalyst for Use with High-Temperature Conditions” SAE 2001-01-1298 2001
- Ando H. “High-Temperature Lean NOx Catalyst and Catalyst Reaction Management” AutoTechnolgy 4 70 2001
- Dou D. Balland J. “Impact of Alkali Metals on the Performance and Mechanical Properties of NOx Adsorber Catalysts” SAE 2002-01-0734 2002
- Monroe D.R. Li W. “Desulfation Dynamics of NOx Storage Catalysts” SAE 2002-01-2886 2002
- Parks J. Watson A. Campbell G. Epling B. “Durability of NOx Absorbers: Effect of Repetitive Sulfur Loading and Desulation” SAE 2002-01-2880 2002
- Sluder C.S. West B. H. “Effects of Regeneration Conditions on NOx Adsorber Performance” SAE 2002-01-2876 2002
- Laroo C. Schenk C. Olson B. Way P. McDonald J. “NOx Adsorber Desulfation Techniques for Heavy-Duty On-Highway Diesel Engines” SAE 2002-02-2871
- Dogahara T. Tamura Y. Kikuchi S. Okada K. Koga K. Nakayama O. Ando H. “Advanced Emission Control Technologies for Gasoline Direct Injection Engines” TAE-Technical Academy of Esslingen December 7 2000 Harkonen M.A. Rantakyla T-K. Pohjola V.J. Salanne S. “Prevention of Hydrogen Sulfide Formation on Three-Way Catalysts” SAE 900498
- Henk M.G. White J.J. Denison G.W. “Sulfur Storage and Release from Automotive Catalysts” SAE 872134