10th Symposium "The Working Process of the Internal Combustion Engine"
Investigation of the Mixture Formation Process in Gas Engines by Means of Laser-based Measurement Techniques
Authors
Dipl.-Ing. Thomas Blotevogel, ESYTEC Energie- und Systemtechnik GmbH, Erlangen, Dipl.-Ing. Jürgen Goldlücke, Dr.-Ing. Jan Egermann, Prof. Dr.-Ing. Alfred Leipertz, Lehrstuhl für Technische Thermodynamik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Dr. Matthias Hartmann, Dr.-Ing. Hermann Rottengruber, BMW Group, München
Year
2005
Summary
This paper describes a measurement technique (based on laser-induced fluorescence) for the qualitative and quantitative analysis of the mixture formation process of gaseous fuels. The development process is shown, also the verification of this technique by other measurement methods. Some exemplary results with port and in-cylinder gas injection in a hydrogen engine are presented. Detailed information can be obtained about the process development (qualitative measurement) and on the fuel/air-ratio (quantitative measurement) inside the combustion chamber. These results can be used for further optimization of the mixture formation and the combustion process concerning emissions and fuel consumption. Additionally the results can be used for the adjustment of computer simulations. Finally further possibilities for the use of optical measurement techniques during gas engine development are discussed.
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