Obiettivo 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. Campo scientifico natural scienceschemical sciencesorganic chemistryhydrocarbonsnatural scienceschemical sciencescatalysisnatural sciencesmathematicspure mathematicsgeometryengineering and technologyenvironmental engineeringenergy and fuels Programma(i) FP3-BRITE/EURAM 2 - Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994 Argomento(i) 2.3.1 - Design integrating strategies Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore Gilardini SpA Contributo UE Nessun dato Indirizzo Via Cuneo 20 10152 Torino Italia Mostra sulla mappa Costo totale Nessun dato Partecipanti (6) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto ALLIED SIGNAL AUTOMOTIVE CATALIST SA Francia Contributo UE Nessun dato Indirizzo 21 AVENUE DU MIRAIL 31100 TOULOUSE Mostra sulla mappa Costo totale Nessun dato Centro Ricerche Fiat ScpA Italia Contributo UE Nessun dato Indirizzo Strada Torino 50 10043 Orbassano Torino Mostra sulla mappa Costo totale Nessun dato HEINRICH GILLET GMBH AND CO KG Germania Contributo UE Nessun dato Indirizzo 6732 EDENKOBEN Mostra sulla mappa Costo totale Nessun dato SOLLAC Francia Contributo UE Nessun dato Indirizzo Immeuble Elysée 92072 Paris la Défense Mostra sulla mappa Costo totale Nessun dato UNIV ARISTOTLE THESSALONIKI Grecia Contributo UE Nessun dato Indirizzo 54006 THESSALONIKI Mostra sulla mappa Costo totale Nessun dato UNIVERSITY OF SOUTHAMPTON Regno Unito Contributo UE Nessun dato Indirizzo Highfield SOUTHAMPTON Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato