Objective 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. Fields of science natural scienceschemical sciencesorganic chemistryhydrocarbonsnatural scienceschemical sciencescatalysisnatural sciencesmathematicspure mathematicsgeometryengineering and technologyenvironmental engineeringenergy and fuels Programme(s) FP3-BRITE/EURAM 2 - Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994 Topic(s) 2.3.1 - Design integrating strategies Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Gilardini SpA EU contribution No data Address Via Cuneo 20 10152 Torino Italy See on map Total cost No data Participants (6) Sort alphabetically Sort by EU Contribution Expand all Collapse all ALLIED SIGNAL AUTOMOTIVE CATALIST SA France EU contribution No data Address 21 AVENUE DU MIRAIL 31100 TOULOUSE See on map Total cost No data Centro Ricerche Fiat ScpA Italy EU contribution No data Address Strada Torino 50 10043 Orbassano Torino See on map Total cost No data HEINRICH GILLET GMBH AND CO KG Germany EU contribution No data Address 6732 EDENKOBEN See on map Total cost No data SOLLAC France EU contribution No data Address Immeuble Elysée 92072 Paris la Défense See on map Total cost No data UNIV ARISTOTLE THESSALONIKI Greece EU contribution No data Address 54006 THESSALONIKI See on map Total cost No data UNIVERSITY OF SOUTHAMPTON United Kingdom EU contribution No data Address Highfield SOUTHAMPTON See on map Links Website Opens in new window Total cost No data