Shock Waves Generated by High-Pressure Fuel Sprays Directly Imaged by X-Radiography 2002-01-1892
Synchrotron x-radiography and a novel fast x-ray detector are used to visualize the detailed, time-resolved structure of the fluid jets generated by a high pressure diesel-fuel injection. An understanding of the structure of the high-pressure spray is important in optimizing the injection process to increase fuel efficiency and reduce pollutants. It is shown that x-radiography can provide a quantitative measure of the mass distribution of the fuel. Such analysis has been impossible with optical imaging due to the multiple-scattering of visible light by small atomized fuel droplets surrounding the jet. In addition, direct visualization of the jet-induced shock wave proves that the fuel jets become supersonic under appropriate injection conditions. The radiographic images also allow quantitative analysis of the thermodynamic properties of the shock wave.
Citation: Wang, J., MacPhee, A., Powell, C., Yue, Y. et al., "Shock Waves Generated by High-Pressure Fuel Sprays Directly Imaged by X-Radiography," SAE Technical Paper 2002-01-1892, 2002, https://doi.org/10.4271/2002-01-1892. Download Citation
Author(s):
Jin Wang, Andrew MacPhee, Christopher F. Powell, Yong Yue, Suresh Narayanan, Mark W. Tate, Matthew J. Renzi, Alper Ercan, Ernie Fontes, Sol M. Gruner, Jochen Walther, Johannes Schaller
Affiliated:
Argonne National Laboratory, Cornell Univ., Corporate Research, Robert Bosch GmbH
Pages: 8
Event:
Future Car Congress
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 2002 Transactions Journal of Engines-V111-3
Related Topics:
Fuel economy
Energy conservation
Fuel injection
Imaging and visualization
Diesel fuels
Optics
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