10th Symposium "The Working Process of the Internal Combustion Engine"
Optical Indicating on Combustion Engines with Smallest Sensors
Authors
S. Kunte, K. Boulouchos, Eidgenössische Technische Hochschule, Zürich, W. Hentschel, F. Kallmeyer, Volkswagen AG, Forschung und Entwicklung, Wolfsburg, C. Cavalloni, P. Wolfer, D. Karst, Kistler Instrumente AG
Year
2005
Summary
Analyses of energy losses and gas exchange are typical applications of cylinder pressure analysis and are already in use on test beds as optimisation tools. The optical indication offers information for research as well as for development, which exceeds the thermodynamical analysis. The combustion light can be detected in Diesel - as well in GDI engines thanks to a novel optical sensor. The combustion light allows computing the flame temperature and the soot concentration. The acquired information allows qualitative conclusions on the formation of NO and soot. Prototype optical sensors tested in combustion development at Volkswagen are prooved to be suitable detecting cyclic variations in the combustion. The goal is the development of a robust, stable and easy to use optical sensor. The main emphasis is on the application on the test bed, to obtain direct information on mixture formation and combustion process. Therefore optical sensors are integrated in glow plugs of a diesel engine and in spark plugs of a GDI engine, respectively. The two essential properties are a rather self-cleaning optical system and no impact on mixture formation and combustion.
Members of the Austrian Society of Automotive Engineers have access to all lectures of the International Vienna Motor Symposia.