3D analysis of vapor and liquid phase of GDI injectors using laser induced exciplex fluorescence tomography in a high pressure/high temperature spray chamber

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3D analysis of vapor and liquid phase of GDI injectors using laser induced exciplex fluorescence tomography in a high pressure/high temperature spray chamber

Aigner, Manfred / Rogler, Philipp / Grzeszik, Roman / Arndt, Stefan

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.

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Dokumentinformationen

Titel :

3D analysis of vapor and liquid phase of GDI injectors using laser induced exciplex fluorescence tomography in a high pressure/high temperature spray chamber

Weitere Titelangaben:

Sae Technical Papers

Beteiligte:

Aigner, Manfred (Autor:in) / Rogler, Philipp (Autor:in) / Grzeszik, Roman (Autor:in) / Arndt, Stefan (Autor:in)

Kongress:

JSAE/SAE International Fuels & Lubricants Meeting ; 2007

Erschienen in:

Sae Technical Paper Series

Erscheinungsdatum :

2007-07-23

ISSN :

2688-3627 , 0148-7191