Objetivo The principal aim achieved from the EXASYSDE project was the development of an integrated design procedure for the vehicle exhaust system, according to the following industrial targets: a durability of the exhaust system downstream of the catalyst equal to 80 000 km or 4 years, with design procedure optimisation and the use of new materials having a cost as low as possible; 30% lower emissions in term of unburned hydrocarbons and nitrogen oxides; 3-way catalyst having a conversion efficiency drop not higher than 15% at the end of the useful car life; an exhaust noise reduction share proportional to the overall vehicle noise reduction from 77 dB(A) to 71 dB(A); 3% increase of fuel economy at still acceptable vehicle performance. The secondary objective of the project concerned the reduction of the exhaust system design costs and time to market, with the use of the newly developed methodologies, by 20% and 30% respectively. Among the tools and procedures developed during the project, those concerning the prediction of tailpipe noise and exhaust emissions gave a substantial contribution to the achievements of the objectives. It has been proved that these tools - simulation codes, computational procedures and design guidelines - can be used as design tools for exhaust systems.The proposed research is directed at developing open methodologies in order to design, in a quite integrated way, the vehicle exhaust system by taking into account :- low cost materials defined through geometric optimization of the exhaust line, corrosion resistance, and link optimization of the different exhaust components;- the compliance with very severe emission targets after the year 2000 with catalysts having an optimized geometry and maintaining high conversion efficiency during the useful car life;- the compliance with very severe noise targets with the contribution of all exhaust system components.The major research tasks are :- 3-D modeling the hot gas flow in the exhaust system - Acoustic characterization of the exhaust system - Exhaust emission control - Definition of exhaust system durability and service life - Development of the exhaust system integrated design procedure - Optimized prototype construction of a car exhaust systemSuccessful completion should yield reduction of emissions of 30%, 5% fuel economy increase and doubling of exhaust system life. Ámbito científico natural scienceschemical sciencesorganic chemistryhydrocarbonsnatural scienceschemical sciencescatalysisnatural sciencesmathematicspure mathematicsgeometryengineering and technologyenvironmental engineeringenergy and fuels Programa(s) FP3-BRITE/EURAM 2 - Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994 Tema(s) 2.3.1 - Design integrating strategies Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Gilardini SpA Aportación de la UE Sin datos Dirección Via Cuneo 20 10152 Torino Italia Ver en el mapa Coste total Sin datos Participantes (6) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo ALLIED SIGNAL AUTOMOTIVE CATALIST SA Francia Aportación de la UE Sin datos Dirección 21 AVENUE DU MIRAIL 31100 TOULOUSE Ver en el mapa Coste total Sin datos Centro Ricerche Fiat ScpA Italia Aportación de la UE Sin datos Dirección Strada Torino 50 10043 Orbassano Torino Ver en el mapa Coste total Sin datos HEINRICH GILLET GMBH AND CO KG Alemania Aportación de la UE Sin datos Dirección 6732 EDENKOBEN Ver en el mapa Coste total Sin datos SOLLAC Francia Aportación de la UE Sin datos Dirección Immeuble Elysée 92072 Paris la Défense Ver en el mapa Coste total Sin datos UNIV ARISTOTLE THESSALONIKI Grecia Aportación de la UE Sin datos Dirección 54006 THESSALONIKI Ver en el mapa Coste total Sin datos UNIVERSITY OF SOUTHAMPTON Reino Unido Aportación de la UE Sin datos Dirección Highfield SOUTHAMPTON Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos
