10th Symposium "The Working Process of the Internal Combustion Engine"
Experimental Investigation of Knocking Combustion in a Rapid Compression Machine
Authors
Marcus Pöschl, Thomas Sattelmayer, Lehrstuhl für Thermodynamik, Technische Universität München
Year
2005
Summary
The use of a Rapid Compression Machine provides the possibility of investigating the fundamental kinetic behaviour of combustion under conditions similar to those in conventional engines. The aim is the investigation at well known conditions without having random fluctuations. Influencing factors like fuel inhomogeneities are avoided as much as possible. The gases in a conventional engine consist of small scale areas with different temperatures. In contrast to that, the Rapid Compression Machine shows a clearly defined temperature distribution which covers a large area and facilitates the investigation of the processes especially under knocking combustion. This paper deals with the analysis and characterisation of the different phases of low-temperature kinetics at knocking as well as non-knocking combustion. The combustion was controlled by ignition timing, variation of the spark plug position and compression ratio.
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