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Future emission legislation for 2 and 3 wheelers in EU and many other Countries will introduce durability of pollution control devices. Along with a durable coating technology, the mechanical durability of the substrate must be ensured to guarantee the requested conversion efficiency for the entire life of the motorcycle. A traditional approach consisting in engine bench and vehicle testing is no more competitive considering the very short time to market needed in the motorcycle market and the relevant cost related to this kind of tests. For this reason a new time and cost efficient accelerated component durability test was developed, which can account for the combined effects of critical load at a metallic catalytic converter. This paper shows the methodology used to determine the critical stressors and their levels in real operating conditions by measuring and analyzing a broad range of vehicle test information.

Future tighter emission limits for 2 wheelers in Europe and worldwide will require a completely new approach in catalyst system design. In particular, the EU5 scenario, probably with the same emission limits as 4 wheelers and, for the first time, emission durability requirements, needs a new strategy to combine higher and durable conversion efficiency with the classical characteristics of 2 wheeler systems: low cost, low weight with minimum impact on exhaust system layout and engine out performances such as low fuel consumption and good power output. This paper deals with the investigation of innovative metallic substrates keeping constant, as a first step towards the development of an EU5 system, both washcoat technology and PGM loading. In particular the effect of turbulent structures in the substrate, using PE (Perforated Foils) and LS (Longitudinal Structure) have been thoroughly investigated in testing 400cpsi PE and LS substrates.

Emissions during the useage phase of vehicles are of increasing interest in environmental protection, and consequently, there is considerable interest in exhaust systems. The automotive exhaust system including the catalytic converter is, because of the precious metals in the catalyst, of particular interest for the recycling of automotive parts. The paper will describe the recycling technology of ceramic and metal catalyst substrates. The process will be analyzed in detail with the example of metal supports. As a result the complete life cycle and the recycling efficiency are presented.