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X-Ray Absorption Measurements of Diesel Sprays and the Effects of Nozzle Geometry
Technical Paper
2004-01-2011
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to analyze the effects of nozzle geometry on the structure of fuel sprays, quantitative x-ray measurements have been performed on sprays from nozzles with different degrees of hydro-grinding. The two nozzles were measured at injection pressures of 500 and 1000 bar in an ambient environment of 1 bar nitrogen gas. Time-resolved x-radiography was used to measure the two-dimensional mass distributions of the spray as a function of time for the entire spray event. The initial mass flow through the nozzles was determined from the x-ray data, the nozzles showed no appreciable differences in the early part of the injection event. The transverse mass distributions were fit with Gaussian curves, and the assumption of axisymmetry was used to calculate the volume fraction of each spray. It was observed that the nozzle which had undergone extensive hydro-grinding generated a more dense spray than the sharp-edged nozzle at an injection pressure of 1000 bar.
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Authors
- Christopher F. Powell - Center for Transportation Research, Argonne National Laboratory
- Stephen A. Ciatti - Center for Transportation Research, Argonne National Laboratory
- Seong-Kyun Cheong - Advanced Photon Source, Argonne National Laboratory
- Jinyuan Liu - Advanced Photon Source, Argonne National Laboratory
- Jin Wang - Advanced Photon Source, Argonne National Laboratory
Topic
Citation
Powell, C., Ciatti, S., Cheong, S., Liu, J. et al., "X-Ray Absorption Measurements of Diesel Sprays and the Effects of Nozzle Geometry," SAE Technical Paper 2004-01-2011, 2004, https://doi.org/10.4271/2004-01-2011.Also In
Mixture Preparation, Combustion and Emission Formation Processes in SI Engines, and Diesel Spray and Mixture Formation
Number: SP-1888; Published: 2004-06-08
Number: SP-1888; Published: 2004-06-08
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