Metal supported catalysts, whose early development actually started in the sixties, are used today in a few isolated cases as starter catalysts, retrofit and underfloor catalysts of small dimensions. The new Porsche Carrera 4 is the first production car to use a large main catalytic converter with metal supports. This paper describes the design of this catalyst and the advantages of using the metal supports, especially the increase in power output due to the reduction of exhaust back pressure. Also benefits in catalytic performance could be determined. The major requirement in using large metal supports in production is mechanical sturdiness. In extensive vehicle, test bench and laboratory tests and according to the theoretical calculations, the support with S-design described here has met this requirement. Inspite of some still existing disadvantages, both of which can be reduced with further development, the use of metal supported catalytic converters is a serious alternative to the conventional ceramic supported catalyst.
The development and application of a metal supported catalyst for Porsche's 911 Carrera 4
Entwicklung und Anwendung eines Katalysators auf Metalltraeger fuer den Porsche 911 Carrera 4
SAE-Papers ; Mar ; 1-15
1989
15 Seiten, 30 Bilder, 5 Tabellen, 8 Quellen
Aufsatz (Konferenz)
Englisch
The Development and Application of a Metal Supported Catalyst for Porsche's 911 Carrera 4
SAE Technical Papers | 1989
|Carrera GT - Porsche's Le Mans-bred supercar
Online Contents | 2000
Porsche Carrera GT - Behind the wheel in Porsche's ultimate car
Online Contents | 2003
Ampersand - Porsche's Carrera GT and official photos of the baby Jag
Online Contents | 2000
|Porsche's swansong 997 Carrera End-of-line GTS coupé and cabrio get 402bhp
Online Contents | 2010