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The paper presents the results of a comparative analysis of the changes in the injection spray shape and penetration and its vertex angle during the injection through piezoelectric and electromagnetic fuel injectors. The results of the observation of the fuel spray with the use of high speed camera (100 ms frame frequency) have been presented. Moreover, the parameterization and digital processing (including its automation) of the obtained image have too been presented. The influence of the pressure and the timing of the injection on the variable-in-time spray parameters have been shown. A mathematical model describing these relations has been proposed.

A comparative analysis of diesel fuel injection parameters in piezoelectric and electromagnetic fuel injectors