Description: Das Projekt "Verbesserung der Motorleistung und Effizienz durch Minimierung der Klopfwahrscheinlichkeit" wird vom Umweltbundesamt gefördert und von Universität Stuttgart, Institut für Technische Verbrennung durchgeführt. Internal combustion (IC) engines are by far the major power sources for road transportation today. The limitation of natural oil resources, concerns about global warming due to carbon dioxide and the poor air quality in cities are the driving forces for research development of alternative concepts such as battery electric and fuel cell vehicles. Still IC-engines will play a major role within the next 10-15 years in road transportation due to the potential for the increase of efficiency and the reduction of pollutant emissions, the available infrastructure for fuel, the reliability, the production costs and customer acceptance. Therefore research and development activities on IC-engines are of significant importance for Europe's contribution to climate preservation, pollutant emission minimisation and the ability of the automotive industry to create high employment. In combination with the Euro IV and V emission limits and the likely new emission standards, the already very low carbon dioxide emission levels of gasoline engines have still to be further improved to meet the Kyoto targets. Current configurations of engine combustion systems for low emissions combined with after-treatment systems designed to achieve the new emission standards, are reducing engine efficiency by 2-10 percent or even more. The compensation of these effects and the further improvement of efficiency requires new concepts as DGI, Down-Sizing, turbo charging or CAI (Controlled Auto Ignition). These technologies require very detailed knowledge of all physical and chemical processes related to engines as well as the ability to simulate and measure these processes in order to turn over significant optimisation potential. Up to date, the optimisation of existing engines and the development of new engines concepts like DGI, Down-Sizing, turbo charging or CAI is still a challenge for engine developers considering high loads over the entire speed range. This is mostly due to the knocking phenomenon, which is still in an early stage of understanding, although there have been considerable activities in this area. Describing and even predicting knocking is a tedious task, requiring detailed knowledge of all the processes occurring in the combustion chamber. Consequently, a better understanding of engine knock by means of CFD1 simulation and detailed experiments could strongly support this optimisation and development process. The objective of the proposed project is to provide a better understanding of how engine knock is initiated and influenced by fuel and engine parameters. Advanced measurement techniques will be employed and simulation tools will be developed. The proposed work will complement current European and national projects and will be fully integrated in the LEVEL Cluster. ...
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Benzin ? Dieselkraftstoff ? Stuttgart ? Fossiler Brennstoff ? Kraftstoff ? Brennstoff ? Erdöl ? Kyoto ? Brennstoffzelle ? Dieselmotor ? Kraftstoffverbrauch ? Ottomotor ? Flugtriebwerk ? EURO 4 ? Emissionsmessung ? Abgasreduzierung ? Anfechtung ? Automobil ? Elektromotor ? Kohlendioxid ? Luftreinhaltung ? Messtechnik ? Schadstoffemission ? Straßenverkehr ? Verbrennung ? Verbrennungsmotor ? Verfahrensoptimierung ? Globale Erwärmung ? Brennstoffzellenfahrzeug ? Luftqualität ? Fahrzeugtechnik ? Brennkammer ? Abgasemission ? Alternativtechnologie ? Chemisches Verfahren ? Produktionskosten ? Simulation ? Simulationsmodell ? Stand der Technik ? Arbeitsplatz ? Emissionsminderung ? Energie ? Energietechnik ? Wirkungsgrad ? Stadt ? Klimaschutz ? Minderungspotenzial ? Globale Veränderung ? Forschung und Entwicklung ? Europa ? Abgasnorm ? Güterverkehr ? Automobilindustrie ? Antriebstechnik ? Umweltfreundliche Technologie ? Fahrzeug ? Schadstoffminderung ? Grenzwert ? Effizienzsteigerung ? Verkehrsemission ? Kenngröße ? Klimawandel ? Temperaturerhöhung ? Betriebsparameter ? Akzeptanz ? DGI ? Controlled-Auto-Ignition ? CAI ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2003-01-01 - 2005-12-31
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