PUBLISHED PAPERS #04.6
| Oleh Klyus, Marcin Szczepanek, Jerzy Cisek, Slawomir Olszowski. Application of Acoustic Emission in Diesel Engines Diagnostics |
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| Abstract. The analysis of the processes taking place in the cylinder of a compression-ignition engine shows a high dependence of the ecological and economic parameters of its operation on the fuel atomization process. The parameter of mean droplet diameter (SMD, Sauter) used for this purpose can be used to assess the quality of fuel atomization, but its determination is only possible during laboratory tests on special stands. The article proposes a combination of testing the spraying quality with measuring the size of the acoustic emission signal originating from the elastic waves accompanying the spraying process. The relationships between the Suter diameter and the acoustic signal level obtained in this way can be used directly on the running engine. In the experimental tests, the laser diffraction method was used to measure the spray quality using the Spraytec device from Malvern, and a measurement set with a Kiestler sensor was used to record and process the acoustic signal. A relationship between the values of the Sauter diameter and the energy of the acoustic signal was obtained, on the basis of which a method was developed for assessing the quality of the fuel atomization process in compression-ignition engines by measuring the acoustic signal recorded during the fuel injection process. |
| Keywords: Sauter mean diameter, acoustic emission, diesel engines, fuel injection, atomization |
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