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Title: Internal and near nozzle measurements of Engine Combustion Network “Spray G” gasoline direct injectors

Gasoline direct injection (GDI) sprays are complex multiphase flows. When compared to multi-hole diesel sprays, the plumes are closely spaced, and the sprays are more likely to interact. The effects of multi-jet interaction on entrainment and spray targeting can be influenced by small variations in the mass fluxes from the holes, which in turn depend on transients in the needle movement and small-scale details of the internal geometry. In this paper, we present a comprehensive overview of a multi-institutional effort to experimentally characterize the internal geometry and near-nozzle flow of the Engine Combustion Network (ECN) Spray G gasoline injector. In order to develop a complete picture of the near-nozzle flow, a standardized setup was shared between facilities. A wide range of techniques were employed, including both X-ray and visible-light diagnostics. The novel aspects of this work include both new experimental measurements, and a comparison of the results across different techniques and facilities. The breadth and depth of the data reveal phenomena which were not apparent from analysis of the individual data sets. We show that plume-to-plume variations in the mass fluxes from the holes can cause large-scale asymmetries in the entrainment field and spray structure. Both internal flow transients andmore » small-scale geometric features can have an effect on the external flow. The sharp turning angle of the flow into the holes also causes an inward vectoring of the plumes relative to the hole drill angle, which increases with time due to entrainment of gas into a low-pressure region between the plumes. In conclusion, these factors increase the likelihood of spray collapse with longer injection durations.« less
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [3] ;  [3] ;  [4] ;  [4] ;  [5] ;  [5] ;  [6] ;  [7] ;  [8] ;  [8] ;  [8]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. (Australia)
  3. Univ. Politecnica de Valencia, Valencia (Spain)
  4. Institut Carnot IFPEN Transports Energie, Rueil-Malmaison (France)
  5. General Motors Research & Development, Warren, MI (United States)
  6. Delhi Powertrain Systems
  7. Univ. of Massachusetts, Amherst, MA (United States)
  8. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Experimental Thermal and Fluid Science
Additional Journal Information:
Journal Volume: 88; Journal Issue: C; Journal ID: ISSN 0894-1777
Publisher:
Elsevier
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 42 ENGINEERING
OSTI Identifier:
1392620

Duke, Daniel J., Monash Univ., Kastengren, Alan L., Matusik, Katarzyna E., Swantek, Andrew B., Powell, Christopher F., Payri, Raul, Vaquerizo, Daniel, Itani, Lama, Bruneaux, Gilles, Grover, Jr., Ronald O., Parrish, Scott, Markle, Lee, Schmidt, David, Manin, Julien, Skeen, Scott A., and Pickett, Lyle M.. Internal and near nozzle measurements of Engine Combustion Network “Spray G” gasoline direct injectors. United States: N. p., Web. doi:10.1016/j.expthermflusci.2017.07.015.
Duke, Daniel J., Monash Univ., Kastengren, Alan L., Matusik, Katarzyna E., Swantek, Andrew B., Powell, Christopher F., Payri, Raul, Vaquerizo, Daniel, Itani, Lama, Bruneaux, Gilles, Grover, Jr., Ronald O., Parrish, Scott, Markle, Lee, Schmidt, David, Manin, Julien, Skeen, Scott A., & Pickett, Lyle M.. Internal and near nozzle measurements of Engine Combustion Network “Spray G” gasoline direct injectors. United States. doi:10.1016/j.expthermflusci.2017.07.015.
Duke, Daniel J., Monash Univ., Kastengren, Alan L., Matusik, Katarzyna E., Swantek, Andrew B., Powell, Christopher F., Payri, Raul, Vaquerizo, Daniel, Itani, Lama, Bruneaux, Gilles, Grover, Jr., Ronald O., Parrish, Scott, Markle, Lee, Schmidt, David, Manin, Julien, Skeen, Scott A., and Pickett, Lyle M.. 2017. "Internal and near nozzle measurements of Engine Combustion Network “Spray G” gasoline direct injectors". United States. doi:10.1016/j.expthermflusci.2017.07.015. https://www.osti.gov/servlets/purl/1392620.
@article{osti_1392620,
title = {Internal and near nozzle measurements of Engine Combustion Network “Spray G” gasoline direct injectors},
author = {Duke, Daniel J. and Monash Univ. and Kastengren, Alan L. and Matusik, Katarzyna E. and Swantek, Andrew B. and Powell, Christopher F. and Payri, Raul and Vaquerizo, Daniel and Itani, Lama and Bruneaux, Gilles and Grover, Jr., Ronald O. and Parrish, Scott and Markle, Lee and Schmidt, David and Manin, Julien and Skeen, Scott A. and Pickett, Lyle M.},
abstractNote = {Gasoline direct injection (GDI) sprays are complex multiphase flows. When compared to multi-hole diesel sprays, the plumes are closely spaced, and the sprays are more likely to interact. The effects of multi-jet interaction on entrainment and spray targeting can be influenced by small variations in the mass fluxes from the holes, which in turn depend on transients in the needle movement and small-scale details of the internal geometry. In this paper, we present a comprehensive overview of a multi-institutional effort to experimentally characterize the internal geometry and near-nozzle flow of the Engine Combustion Network (ECN) Spray G gasoline injector. In order to develop a complete picture of the near-nozzle flow, a standardized setup was shared between facilities. A wide range of techniques were employed, including both X-ray and visible-light diagnostics. The novel aspects of this work include both new experimental measurements, and a comparison of the results across different techniques and facilities. The breadth and depth of the data reveal phenomena which were not apparent from analysis of the individual data sets. We show that plume-to-plume variations in the mass fluxes from the holes can cause large-scale asymmetries in the entrainment field and spray structure. Both internal flow transients and small-scale geometric features can have an effect on the external flow. The sharp turning angle of the flow into the holes also causes an inward vectoring of the plumes relative to the hole drill angle, which increases with time due to entrainment of gas into a low-pressure region between the plumes. In conclusion, these factors increase the likelihood of spray collapse with longer injection durations.},
doi = {10.1016/j.expthermflusci.2017.07.015},
journal = {Experimental Thermal and Fluid Science},
number = C,
volume = 88,
place = {United States},
year = {2017},
month = {7}
}