Objective With increasing CO2-emissions and reducing oil resources fuel economy improvement of passenger car S.I. engines has become a major issue. A promising approach is the reduction of pumping and friction losses by shifting the operation point to lower engine speed/higher load by engine down sizing. This requires small-supercharged engines with a high specific power (kW/litre). To improve part load efficiency and to avoid full load knocking these engines must have a Variable Compression Ratio (VCR). A down-sized, highly boosted engine with variable compression ratio has a 30% fuel saving potential compared to a model year 1998 vehicle and has simultaneously low exhaust emission levels as 'a=1.0-concept' with the well developed TWC technology. The goal of this project is to demonstrate these benefits through single-cylinder investigations with different VCR mechanisms as well as multi-cylinder test bench and in-vehicle investigations. As a final output, the industrial feasibility and the costs of such an engine concept shall be demonstrated.The outcome of the project can be summarized as follows: Three different VCR concepts have been designed and manufactured. In parallel to the concept phase, a literature and patent study, regarding existing VCR-concepts has been accomplished by the consortium. In addition to the hardware designs, the combustion calculation for VCR engines, supported by single cylinder investigations have been conducted. Based on this results, 2 full-size validator engines have been produced and installed into validator vehicles and were tested in the MVEG cycle. Depending on the VCR system used and the degree of down sizing fuel improvement of up to 27% were measured. The fuel improvement resulting only on the optimal compression ratio depending of load and speed come up to 8% (w./o. downsizing effect). Fields of science engineering and technologyenvironmental engineeringenergy and fuelsliquid fuels Programme(s) FP5-GROWTH - Programme for research technological development and demonstration on "Competitive and sustainable growth 1998-2002" Topic(s) 1.1.3.-3. - Key Action Land Transport and Marine Technologies Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator FEV MOTORENTECHNIK GMBH Address Neuenhofstrasse 181 Aachen Germany See on map Links Website Opens in new window EU contribution € 0,00 Participants (7) Sort alphabetically Sort by EU Contribution Expand all Collapse all AACHEN UNIVERSITY OF TECHNOLOGY Germany EU contribution € 0,00 Address 8,schinkelstrasse 8 52062 Aachen See on map LE MOTEUR MODERNE SA France EU contribution € 0,00 Address 9,rue benoit frachon 9 91127 Palaiseau See on map LUND UNIVERSITY Sweden EU contribution € 0,00 Address Ole roemers vaeg 1 221 00 Lund See on map PEUGEOT CITROËN AUTOMOBILES S.A. France EU contribution € 0,00 Address Route de gisy 2, centre technique de velizy 78943 Velizy villacoublay See on map PRODRIVE LTD United Kingdom EU contribution € 0,00 Address C/o prodrive ltd OX16 7XS Banbury See on map REGIENOV - RENAULT RECHERCHE ET INNOVATION France EU contribution € 0,00 Address Avenue du 18 juin 1940 9-11- 92500 Rueil-malmaison See on map VOLVO CAR CORPORATION Sweden EU contribution € 0,00 Address Dep. 90000 405 31 Goeteborg See on map
