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Shock Waves Generated by High-Pressure Fuel Sprays Directly Imaged by X-Radiography
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 03, 2002 by SAE International in United States
Annotation ability available
Event: Future Car Congress
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.
- Jin Wang - Argonne National Laboratory
- Andrew MacPhee - Argonne National Laboratory
- Christopher F. Powell - Argonne National Laboratory
- Yong Yue - Argonne National Laboratory
- Suresh Narayanan - Argonne National Laboratory
- Mark W. Tate - Cornell Univ.
- Matthew J. Renzi - Cornell Univ.
- Alper Ercan - Cornell Univ.
- Ernie Fontes - Cornell Univ.
- Sol M. Gruner - Cornell Univ.
- Jochen Walther - Corporate Research, Robert Bosch GmbH
- Johannes Schaller - Corporate Research, Robert Bosch GmbH
CitationWang, 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.
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