Systems Design for Ceramic LFA Substrates for Diesel/Natural Gas Flow- Through Catalysts

Paper #:
  • 950150

Published:
  • 1995-02-01
Citation:
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.
Pages:
13
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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