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Systems Design for Ceramic LFA Substrates for Diesel/Natural Gas Flow- Through Catalysts
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Abstract
The monolithic, large frontal area (LFA), extruded ceramic substrates for diesel flow-through catalysts offer unique advantages of design versatility, longterm durability, ease of packaging and low Cost [1, 2]*. This paper examines the effect of cell density and cell size on catalyst light-off performance, back pressure, mechanical and thermal durability, and the steady-state catalytic activity. The factors which affect these performance characteristics are discussed. Certain trade-offs in performance parameters, which are necessary for optimum systems design, are also discussed. Following a brief discussion of design methodology, substrate selection, substrate/washcoat interaction and packaging specifications, the durability data for ceramic flow-through catalysts are summarized. A total of over 18 million vehicle miles have been successfully demonstrated by ceramic LFA catalysts using the systems design approach.
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Miller, R., McDonald, A., and Gulati, S., "Systems Design for Ceramic LFA Substrates for Diesel/Natural Gas Flow- Through Catalysts," SAE Technical Paper 950150, 1995, https://doi.org/10.4271/950150.Also In
References
- Gulati, S. T. “Design Considerations for Diesel Flow Through Converters,” SAE 920145 ; '92 SAE Int'l Congress and Exposition Detroit, MI February 1992
- Gulati, S. T. Kulkarni, N. “Catalytic Converter Durability,” Truck Engineering December 1992
- Clerc, J. C. Miller, R. K. McDonald, A. C. Schlamadinger, H. “A Diesel Engine/Catalyst System for Pick-up and Medium Duty Trucks,” SAE 932982 ; Truck & Bus Meeting Detroit, MI November 1993
- Gulati, S. T. “Systems Approach for Reliable Design of Monolithic Ceramic Converters for Automotive Emissions Control,” Sao Paulo; 5 o SIMEA SIMPOSIO DE ENGENHARIA AUTOMOTIVA Sao Paulo, Brazil September 1989
- Gulati, S. T. Maret, D. Lambert, D. W. Zink, U. “Systems Durability of a Ceramic Racetrack Converter,” SAE 912371 ; '91 SAE Fuels and Lubricants Meeting Toronto, Canada October 1991
- Ball, D. J. Stack, R. G. “Catalyst Considerations for Diesel Converters,” SAE 902110 Tulsa, OK October 1990
- Farrauto, R. J. Voss, K. E. Heck, R. M. “A Base Metal Oxide Catalyst for Reduction of Diesel Particulates,” SAE 932720 ; '93 SAE Fuels & Lube Meeting Philadelphia, PA October 1993
- Ball, D. J. Stack, R. G. “Catalysts for Diesel Powered Vehicles,” CAPoC2 Conference Brussels, Belgium September 1990
- Gulati, S. T. “Cell Design for Ceramic Monoliths for Catalytic Converter Application,” SAE 881685 ; '88 SAE Fuels and Lubricants Meeting Portland, OR October 1988
- Gulati, S. T. “Effects of Cell Geometry on Thermal Shock Resistance of Catalytic Monoliths,” SAE 750171 ; '75 SAE Congress and Exposition Detroit, MI February 1975
- Day, J. P. “The Design of a New Ceramic Catalyst Support,” SAE 902167 ; '90 Int'l Fuels and Lubricants Meeting Tulsa, OK October 1990
- Day, J. P. Socha, L. S. J. “The Design of Automotive Catalyst Supports for Improved Pressure Drop and Conversion Efficiency,” SAE 910371 ; '91 Int'l Congress and Exposition Detroit, MI February 1991
- Gulati, S. T. Cooper, B. J. Hawker, P. N. Douglas, J. M. Winterborn, D. “Optimization of Substrate/Washcoat Interaction for Improved Catalyst Durability,” SAE 910372 ; '91 SAE Int'l Congress and Exposition Detroit, MI February 1991
- Gulati, S. T. Summers, J. C. Linden, D. G. White, J. J. “Improvements in Converter Durability and Activity via Catalyst Formulation,” SAE 890796 ; '89 SAE Int'l Congress and Exposition Detroit, MI February 1989
- Gulati, S. T. Helfinstine, J. D. “High Temperature Fatigue in Ceramic Honeycomb Catalyst Supports,” SAE 852100 ; '85 SAE Fuels and Lubricants Meeting Tulsa, OK October 1985
- Gulati, S. T. “Thermal Stresses in Ceramic Wall-Flow Diesel Filters,” SAE 830079 ; '83 SAE Int'l Congress and Exposition Detroit, MI February 1983
- Gulati, S. T. Willson, P. J. Yee, M. C. Brady, M. J. “Thermal Shock Resistance of Oval Monolithic Heavy Duty Truck Converters,” SAE 880101 ; '88 SAE Int'l Congress and Exposition Detroit, MI February 1988
- Stroom, R. D. Merry, R. D. Gulati, S. T. “Systems Approach to Packaging Design for Automotive Catalytic Converters,” SAE 900500 ; '90 SAE Int'l Congress and Exposition Detroit, MI February 1990
- Gulati, S. T. Socha, L. S. Then, P. M. Stroom, P. D. “Design Considerations for a Ceramic Preconverter System,” SAE 940744 ; '94 SAE Int'l Congress and Exposition Detroit, MI February 1994
- Gulati, S. T. Socha, L. S. Then, P. M. “Design and Performance of a Ceramic Preconverter System,” CAPoC-3 Brussels, Belgium April 1994
- Weibull, K “A Statistical Distribution Function of Wide Applicability;” J. App. Mech. 18 1951
- Kicinski, K. Nelson Industries, Inc. Stoughton, WI