skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ultrafast x-ray imaging of fuel sprays.

Abstract

Detailed analysis of fuel sprays has been well recognized as an important step for optimizing the operation of internal combustion engines to improve efficiency and reduce emissions. Ultrafast radiographic and tomographic techniques have been developed for probing the fuel distribution close to the nozzles of direct-injection diesel and gasoline injectors. The measurement was made using x-ray absorption of monochromatic synchrotron-generated radiation, allowing quantitative determination of the fuel distribution in this optically impenetrable region with a time resolution on the order of 1 {mu}s. Furthermore, an accurate 3-dimensional fuel-density distribution, in the form of fuel volume fraction, was obtained by the time-resolved computed tomography. These quantitative measurements constitute the most detailed near-nozzle study of a fuel spray to date. With high-energy and high-brilliance x-ray beams available at the Advanced Photon Source, propagation-based phase-enhanced imaging was developed as a unique metrology technique to visualize the interior of an injection nozzle through a 3-mm-thick steel with a 10-{mu}s temporal resolution, which is virtually impossible by any other means.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF); National Institutes of Health (NIH)
OSTI Identifier:
982329
Report Number(s):
ANL/XSD/CP-57825
TRN: US201013%%1007
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 9th International on Synchrotron Radiation Instrumentation (SRI 2006); May 28, 2006 - Jun. 2, 2006; Daegu, Korea
Country of Publication:
United States
Language:
ENGLISH
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ABSORPTION; ADVANCED PHOTON SOURCE; BEAMS; COMPUTERIZED TOMOGRAPHY; DISTRIBUTION; EFFICIENCY; FUELS; GASOLINE; INJECTION; INTERNAL COMBUSTION ENGINES; NOZZLES; OPERATION; ORDERS; RESOLUTION; SPRAYS; STEELS; SYNCHROTRON RADIATION; TIME RESOLUTION; VOLUME; WELLS

Citation Formats

Wang, J., and X-Ray Science Division. Ultrafast x-ray imaging of fuel sprays.. United States: N. p., 2007. Web.
Wang, J., & X-Ray Science Division. Ultrafast x-ray imaging of fuel sprays.. United States.
Wang, J., and X-Ray Science Division. Mon . "Ultrafast x-ray imaging of fuel sprays.". United States. doi:.
@article{osti_982329,
title = {Ultrafast x-ray imaging of fuel sprays.},
author = {Wang, J. and X-Ray Science Division},
abstractNote = {Detailed analysis of fuel sprays has been well recognized as an important step for optimizing the operation of internal combustion engines to improve efficiency and reduce emissions. Ultrafast radiographic and tomographic techniques have been developed for probing the fuel distribution close to the nozzles of direct-injection diesel and gasoline injectors. The measurement was made using x-ray absorption of monochromatic synchrotron-generated radiation, allowing quantitative determination of the fuel distribution in this optically impenetrable region with a time resolution on the order of 1 {mu}s. Furthermore, an accurate 3-dimensional fuel-density distribution, in the form of fuel volume fraction, was obtained by the time-resolved computed tomography. These quantitative measurements constitute the most detailed near-nozzle study of a fuel spray to date. With high-energy and high-brilliance x-ray beams available at the Advanced Photon Source, propagation-based phase-enhanced imaging was developed as a unique metrology technique to visualize the interior of an injection nozzle through a 3-mm-thick steel with a 10-{mu}s temporal resolution, which is virtually impossible by any other means.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: