10th Symposium "The Working Process of the Internal Combustion Engine"
The Potential of Laser Ignition of an Emission and Fuel Consumption Reducing Homogeneous Combustion Process
Authors
Dipl.-Ing. Josef Graf, Prof. Dr. Bernhard Geringer, Institut für Verbrennungskraftmaschinen und KFZ-Bau, Technische Universität Wien, Dr. Günter Herdin, Dipl.-Ing. Johann Klausner, GE Jenbacher, Jenbach
Year
2005
Summary
In this paper the potential of laser ignition in comparison to spark ignition is shown for an engine with homogeneous combustion. The combustion of leaner mixtures or mixtures with a higher EGR-rate allows the unthrottling of the gas exchange at part load operation and thus improves the efficiency. With laser ignition the operation range below the critical running smoothness was extended and due to the decreased ignition delay the combustion timing could be kept in the range of optimal fuel consumption. In addition, the resulting positive effects on NOx-emission are discussed.
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