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Advances of Durability of Ceramic Converter Systems
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Abstract
Governing bodies world-wide are setting increasingly tighter emission standards to help improve air quality. US and Californian LEV/ULEV standards are pace setting, European Stage II legislation has just become effective. In Brazil, the upcoming 1997 standards are also demanding for tighter emission control. The monolithic ceramic honeycomb catalytic converter -for more than the past 20 years- has been a reliable key element in the automotive emission control systems.
In order to help meet tightened emission regulation as well to satisfy even more stringent durability requirement, an advanced thinwall ceramic Celcor XT has been developed for increased geometric surface area and reduced backpressure. The product properties as well as FTP and ECE emission and durability test results are being described in this paper.
Converter system durability is also determined by robust canning and mounting systems. A durable mounting concept, especially for preconverters, is being described. It has been tested under severe conditions of 75 g hotshake test for 100 hrs engine aging, representing 80000km European driving. In addition it has been subjected to 300 hrs engine thermal shock. The paper discusses the test procedures and the results of these tests.
It is shown, that ceramic converter systems withstand these stringent tests and thus represent viable and durable concepts for emission control requirements world wide.
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Authors
Topic
Citation
Then, P. and Zink, U., "Advances of Durability of Ceramic Converter Systems," SAE Technical Paper 962372, 1996, https://doi.org/10.4271/962372.Also In
References
- Systems Durability of a Ceramic Racetrack Converter SAE 912371 Maret, D. Gulati, S.T. Lambert, D.W. Zink, U. October 1991
- Design Considerations for a Ceramic Preconverter System SAE 940744 Gulati, S.T. Socha, L.S. Then, P.M. Stroom, P.D.
- High Temperature Compressive Strength of Extruded Cordierite Ceramic Substrates SAE 950787 Gulati, S.T. Reddy, K.P. February 1995
- “Advances in Durability and Performance of Ceramic Preconverter Systems” SAE 950407 Socha, L.S. Gulati, S.T. Locker, R.J Then, P.M. Zink, U. February 1995
- Quantification of Ceramic Preconverter Hot Vibration Durability” SAE 960563 Locker, R.J. Sawyer, C.B. Schad, M.J. February 1996
- Emission Performance of Ceramic Preconverters Evaluated by FTP and Euro State III Emission Test Cycle SAE 960262 Locker, R.J. Then, P.M. Zink, U. Frebruary 1996
- System Comparison of Metal-, Ceramic Thinwall- and Ceramic Standard Substrates Under Same Geometric Conditions SAE 920385 Stoepler, W. Ermer, H. February 1992
- Close-coupled Catalytic Converters for Compliance with LEV/ULEV and EG III Legislation - Influence of Support Material, Cell Density and Mass on Emission Results SAE 960261 Pfalzraf, B. Rieger, M. Ottowitz, G. February 1996
- Siebler, J. Schreiner, M. Zimmer, R. Rieser, M. Hirschmann, A. Loose, G. Richter, H. Held, W Rohlfs, M. MTZ Motortechnische Zeitschrift 55 1994