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Talks and Poster Presentations (with Proceedings-Entry):

J. Graf, T. Lauer, B. Geringer, H. Rottengruber:
"Innovative Zündsysteme für hochaufgeladene Downsizing-Motoren";
Talk: 1st International Conference: Advanced Ignition Systems for Gasoline Engines, Berlin; 2012-11-12 - 2012-11-13; in: "Advanced Ignition Systems for Gasoline Engines", expert Verlag, (2012), ISBN: 978-3-8169-3190-4; 205 - 225.



English abstract:
By combining downsizing, turbo-charging, fuel direct injection and blending with al-ternative, knock-proof bio fuels, the optimization of fuel consumption and therefore reduction of CO2-emissions can be realized in a gasoline engines. The application of these technologies determines higher gas densities in the combustion chamber and thus intensified requirements of the ignition system regarding ignition energy, ignition voltage and the possibility of multiple sparks. Within the framework of the FVV-CO2-Research Program project cluster "Downsizing Bio Fuels" the subproject "Innovative Ignition" is defined. It aims the finding of appropriate ignition systems.
A literature research with a weighted evaluation according to the defined require-ments resulted in the following short term ignition systems as alternatives to the standard Coil Ignition: Multispark Ignition System (MCI/MSI), Corona Ignition System (ECCOS) and High Energy Ignition System (DEIS).
First investigations of the ignition behavior in a closed combustion chamber showed advantages for the Multiple Spark Ignition System and an energy-strong form of the Coil Ignition. Rapid ignition of a large volume of gas could be detected due to the corona ignition system in several positions of the methane-air mixture. At high filling pressures in the combustion bomb the mixture could not be ignited by the corona system at that time.
Optical, thermodynamical and numerical investigations of ignition on a single-cylinder research-engine were accomplished. The corona ignition system as well as the tran-sistor coil ignition system with increased power could convince in part load operating points at high charge dilution.
In the last part of the project, the selected ignition systems have been tested at a highly-supercharged four-cylinder downsized engine with gasoline direct injection. At full load, the stability of the corona igniter regarding glow ignition was not yet given.
Based on the findings from this research project it can be recommended the transis-tor coil ignition system with increased power as the most promising ignition system and as a further option, the next generation of corona ignition for supercharged downsized engines.

Created from the Publication Database of the Vienna University of Technology.