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Application of Advanced Three-Way Catalyst Technologies on High Cell Density Ultra Thin-Wall Ceramic Substrates for Future Emission Legislations
Technical Paper
2001-01-0924
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2001 World Congress
Language:
English
Abstract
The future emission limits for gasoline fuelled passenger cars require more and more efficient exhaust gas aftertreatment devices - the catalytic converter being one essential part of the complex system design. The present paper summarizes the results of several basic research programs putting major emphasis on the application of highly sophisticated three-way catalyst technologies being taylored for the utilization on ultra thin-wall ceramic substrates.
In the first part of the investigation the following effects were examined in detail:
- Different washcoat loadings at constant PGM-loadings
- Different volumes of catalysts for constant amounts of PGM and washcoat
- Similar washcoat technologies at different ratios of WC-loading to precious metal concentration in the washcoat.
The resulting optimized washcoat system was tested in the second part of the investigation on a EU IV calibrated vehicle comparing a state-of-the-art 400 cpsi/6.5 mil ceramic substrate with different types of ultra thin-wall substrates (UTWS) up to 1200 cpsi/2.5 mil. Furthermore, in case of 900 cpsi/2.5 mil two different PGM-loadings were investigated.
The data of the vehicle study confirmed that UTWS in combination with tailor-made coating technologies can offer a big potential to further optimize the converter performance.
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Citation
Domesle, R., Lindner, D., Mueller, W., Mussmann, L. et al., "Application of Advanced Three-Way Catalyst Technologies on High Cell Density Ultra Thin-Wall Ceramic Substrates for Future Emission Legislations," SAE Technical Paper 2001-01-0924, 2001, https://doi.org/10.4271/2001-01-0924.Also In
Advanced Catalytic Converters and Substrates for Gasoline Emission Systems
Number: SP-1573; Published: 2001-03-05
Number: SP-1573; Published: 2001-03-05
References
- Kollmann K. Abthoff J. Zahn W. “Concepts for Ultra Low Emission Vehicles” SAE Paper 940468 1994
- Crane M.E. Thring R.H. Podnar D.J. Dodge L.E. “Reduced Cold-Start Emissions Using Rapid Exhaust Port Oxidation (REPO) in a Spark-Ignition Engine” SAE Paper 970264 1997
- Achleitner E. Hosp W. Koch A. Schürz W. “Electronic Engine Control System for Gasoline Engines for LEV and ULEV Standards” SAE Paper 950479 1995
- Shimasake Y. Kato K. Muramatsu H. Teshirogi T. Aoki T. Saito A. Rodrigues G. “Study on Conformity Technology with ULEV using EHC System” SAE Paper 960342 1996
- Nishizawa K. Yamada T. Ishizuka Y. Inoue T. “Technologies for Reducing Cold-Start Emissions of V6 ULEVs” SAE Paper 971022 1997
- Shimasaki Y. Kato H. Abe F. Hashimoto S. Kaneko T. “Development of Extruded Electrically Heated Catalyst System for ULEV Standards” SAE Paper 971031 1997
- Ahlvik P. Erlandsson L. Laveskog A. “The Influence of Block Heaters on the Emissions from Gasoline Fueled Cars with Varying Emission Control Technolgy at Low Ambient Temperatures” SAE Paper 970747 1997
- Roychoudhury S. Muench G. Bianchi J.F. Pfefferle W.C. “Development of MicrolithTM Light-Off Preconverters for LEV/ULEV” SAE Paper 971023 1997
- Day J.P. “Substrate Effects on Light-Off - Part II - Cell Shape Contributions” SAE Paper 971024 1997
- Kollmann K. Abthoff J. Zahn W. Bischof H. Gohre J. “Secondary Air Injection with a New Developed Electrical Blower for Reduced Emissions” SAE Paper 920400 1992
- Pfalzgraf B. et al. “The System Development of Electrically Heated Catalyst (EHC) for the LEV and EU-III Regulations” SAE Paper 951072 1995
- Held W. Rohlfs M. Maus W. Swars H. Brück R. Kaiser F.W. “Improved Cell Design for Increased Catalytic Conversion Efficiency” SAE Paper 940932 1994
- Faltmeier G. Pfalzgraf B. Brück R. Kruse C. Maus W. Donnerstag A. “Catalyst Concepts for Future Emission Legislation demonstrated at a 1.8 Liter, 5 Valve Engine” Vienna Motorensymposium Vienna, Austria 398 417 April 1996
- Lindner D. Lox E.S. van Yperen R. Ostgathe K. Kreuzer T. “Reduction of Exhaust Gas Emissions by Using Pd-based Three-way Catalysts” SAE Paper 960802 1996
- Hepburn J. Patel K. Meneghel M. Gandhi H.S. “Development of Pd-only Three-way Catalysts” SAE Paper 941058 1994
- Ball D.J. “A Warm-up and Underfloor Converter Parametric Study” SAE Paper 930386 1993
- Engler B.H. Lox E.S. et al. “Recent Trends in the Application of Three Metal Emission Control Catalysts” SAE Paper 940928 1994
- Engler B.H. Lindner D. Lox E.S. Ostgathe K. Schäfer-Sindlinger A. Müller W. “Reduction of Exhaust Gas Emissions by Using Hydrocarbon Adsorber Systems” SAE Paper 930738 1993
- Waltner G. Loose Hirschmann A. Mußmann L. Lindner D. Müller W. “Development of Close-Coupled Catalyst systems for European Driving Conditions” SAE Paper 980663 1998
- Schmidt J. Waltner A. Loose G. Hirschmann A. Wirth A. Müller W. van den Tillaart J.A.A. Mußmann L. Lindner D. Gieshoff J. Umehara K. Makino M. Biehn K.P. Kunz A. “The Impact of High Cell Density Ceramic Substrates and washcoat Properties on the Catalytic Activity of Three-Way catalysts” SAE Paper 1999-01-0272 1999
- Higuchi N. Nakamura T. “Ceramic Honeycomb” Industrial Material 31 1984
- Howitt J. “Thin Wall Ceramics as Monolithic Catalyst Supports,” SAE Paper 800082 1980
- Mochida S. “Ceramic Honeycomb in the Spotlight,” Chemical Engineering MOL March 1984
- Yamamoto H. Horie H. Kitagawa J. Machida M. “Reduction of Wall Thickness of Ceramic Substrate for Automotive Catalysts” SAE Paper 900614 1990
- Yamamoto H. Kato F. Kitagawa J. Machida M. “Warm-up Characteristics of Thin Wall Honeycomb Catalysts,” SAE Paper 910611 1991
- Machida M. Yamada T. Makino M. “Study of Ceramic Catalyst Optimization for Emission Purification Efficiency,” SAE Paper 940784 1994
- Hijikata T. Kurachi H. Katsube F. Van Honacker H. “Thermal Reliability and Performance Improvement on Close-Coupled Catalytic Converter,” SAE Paper 960565 1996
- Sword Morgan G. O'Sullivan R. Winerbone D. Machida M. “Development of a High Performance Catalytic Converter for a Turbocharged Gasoline Engine Using Thin Wall Ceramic Technology,” SAE Paper 930943 1993
- Tamura N. Matsumoto S. Kawabata M. Kojima M. Machida M. “The development of Automotive Catalyst with Thin Wall (4 mil / 400 cpsi) Substrate,” SAE Paper 960557 1996
- Umehara K. Hijikata T. Katsube F. “Catalytic Performance Improvement by High Cell Density / Thin Wall Ceramic Substrate,” ISATA Paper 96EN044 1996
- Umehara K. Yamada T. Hijikata T. Ichikawa Y. Katsube F. “Advanced Ceramic Substrate: Catalytic Performance Improvement by High Geometric Surface Area and Low Heat Capacity,” SAE Paper 971029 1997