3D analysis of vapor and liquid phase of GDI injectors using laser induced exciplex fluorescence tomography in a high pressure/high temperature spray chamber 2007-01-1827
The quality of mixture formation in gasoline direct injection (GDI) engines has a significant influence on combustion, emissions and mileage. A new measurement technique was set up at an optically accessible high pressure / high temperature spray chamber to investigate the spatial mass distribution of vapor and liquid phase in order to optimize the stratified engine operation mode. Therefore a laser light sheet is traversed through the spray, the exciplex fluorescence is detected and the tomography results are quantified by the global information of the injected mass, which allows detailed spray investigations with λ-charts. For spray homogeneity analysis a new method based on histogram calculation is presented allowing grid independent comparison of different injector types.
Citation: Rogler, P., Grzeszik, R., Arndt, S., and Aigner, M., "3D analysis of vapor and liquid phase of GDI injectors using laser induced exciplex fluorescence tomography in a high pressure/high temperature spray chamber," SAE Technical Paper 2007-01-1827, 2007, https://doi.org/10.4271/2007-01-1827. Download Citation
Philipp Rogler, Roman Grzeszik, Stefan Arndt, Manfred Aigner
Robert Bosch GmbH, Corporate Research, Institute of Combustion Technology, German Aerospace Center
JSAE/SAE International Fuels & Lubricants Meeting