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Knocking Investigations in a small Two-Stroke SI Engine
Technical Paper
2009-32-0013
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English
Abstract
The trend of higher specific power and increased volumetric efficiency leads to unwanted combustion phenomenon such as knocking, pre-ignition and self-ignition.
For four-stroke engines, the literature reports that knocking depends, to a large extent, on the ignition angle, the degree of enrichment and the volumetric efficiency. In recent research, knock investigations in two-stroke engines have only been carried out to a limited extent.
This paper discusses an investigation of the influence of various parameters on the knock characteristics of a small, high-speed, two-stroke SI engine. In particular, the degree of enrichment, the volumetric efficiency and the ignition timing serve as the parameters.
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Authors
- Kai Schreer - Universitaet Karlsruhe (TH), Germany
- Kai W. Beck - Universitaet Karlsruhe (TH), Germany
- Sören Bernhardt - Universitaet Karlsruhe (TH), Germany
- Ulrich Spicher - Universitaet Karlsruhe (TH), Germany
- Werner Geyer - Andreas STIHL AG & Co. KG, Waiblingen, Germany
- Stephan Meyer - Andreas STIHL AG & Co. KG, Waiblingen, Germany
Citation
Schreer, K., Beck, K., Bernhardt, S., Spicher, U. et al., "Knocking Investigations in a small Two-Stroke SI Engine," SAE Technical Paper 2009-32-0013, 2009.Also In
References
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- Markus Rothe “Experimentelle und Numerische Analysen zum Klopfverhalten von Ottomotoren unter Volllastbedingungen” Universität Karlsruhe 2007
- Kollmeier, Hans-Peter “Untersuchungen über die Flammenausbreitung bei klopfender Verbrennung” RWTH Aachen 1987
- Markus Rothe “Druckindizierung bei klopfender Verbrennung” 7. Internationales Symposium für Verbrennungsdiagnostik Baden Baden 2006
- Worret, Ralph “Application of Different Cylinder Pressure Based Knock Detection Methods in Spark Ignition Engines” SAE Paper No. 2002-01-1668