This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Backpressure Optimized Metal Supported Close Coupled PE Catalyst - First Application on a Maserati Powertrain
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 11, 2005 by SAE International in United States
Annotation ability available
Future stringent emission limits both in the European Community and USA require continuously increased conversion efficiency of exhaust after-treatment systems.
Besides the obvious targets of fastest light-off performance, overall conversion efficiency and durability, catalytic converters for maximum output engines require highly optimized flow properties as well, in order to create minimum exhaust backpressure for low fuel consumption.
This work deals with the design, development and serial introduction of a close coupled main catalyst system using the innovative technology of Perforated Foils (PE).
By means of PE-technology, channel-to-channel gas mixing within the metal substrate could be achieved leading to dramatically reduced backpressure values compared with the conventional design.
Due to the highly improved flow properties of the advanced metal substrate, a compact converter could be designed taking into account the demanding packaging constraints in a modern V8 engine compartment.
The present paper consists of numerical simulations, flow bench and engine test bench measurements carried out to assess emission performance, backpressure advantage and engine power output increase of a close-coupled single brick system compliant with LEV-II and EU4 emission limits.
CitationIotti, C., Rossi, V., Poggio, L., Holzinger, M. et al., "Backpressure Optimized Metal Supported Close Coupled PE Catalyst - First Application on a Maserati Powertrain," SAE Technical Paper 2005-01-1105, 2005, https://doi.org/10.4271/2005-01-1105.
- „Application Guideline to define a Catalyst Layout for maximum Catalytic Effeciency” SAE - Paper # 2001-01-0929 Marsh P. Acke F. Konieczny Volvo/ R. Brück R. Hirth P. Emitec GmbH
- “Product Design and Development of Ultra Thin Wall Ceramic Catalytic Substrate” SAE - Paper 2002-01-0350 Aoki Yoichi Miyairi Yukio Ichikawa Yukihito Fumio Abe NGK Insulaters Ltd
- “Design Criteria for Metallic Substrates for Catalytic Converters” SAE - Paper 950789 Brück R. Diewald R. Hirth P. Kaiser F.-W. Emitec GmbH
- “Design Criteria for Metallic Substrates for Future Catalyst Applications, Part III” SAE-Paper 971027 Bergmann A. Brück R. Kruse C. Emitec GmbH
- “Close-Coupled Catalytic Converters for Compliance with LEV/ULEV and EGIII Legislation - Influence of Support Material, Cell Density and Mass on Emission Results” SAE - Paper 960261 Pfalzgraf B. Rieger M. Ottowitz G. AUDI AG
- “Das BMW SULEV ( PZEV ) Konzept - Emissionsreduzierung ohne Kompromisse Wien Motorensymposium 2002 Liebl J. Hofmann R. Melcher Th. BMW AG
- “The development of BMW Catalyst Concepts for LEV/ULEV and EUIII/IV Legislations 6 Cylinder Engine with Close Coupled Main Catalyst” SAE - Paper 980418 Otto E. Albrecht F. Liebl J. BMW AG
- “Next generation catalysts are turbulent: development of support and coating” SAE-Paper 2004-01-1488 Bollig M. Liebl J. Zimmer R. BMW Group Kraum M. Seel O. Siemund S. Engelhard Technologies GmbH Brück R. Diringer J. Maus W. Emitec GmbH
- „Innovatives Katalysatorsystem für den Audi RS6, 8 Zyl, 4,2ltr, 331 KW mit LEV Zertifizierung” Wiener Motoren Symposium 29-30 April 2004 Ganz M. Hackmayer S. quattro GmbH Kruse C. Reck A. Emitec GmbH
- „Optimisation of Catalytic Converter Gas Flow Distribution by CFD Prediction” SAE - Paper 930780 Weltens H. Bressler H. Terres F. Neumaier H. Rammoser D. Heinrich Gillet GmbH & Co. KG