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

Journal Article · · Experimental Thermal and Fluid Science
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [3];  [4];  [5];  [6];  [7];  [7];  [7]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. Politecnica de Valencia, Valencia (Spain)
  3. Institut Carnot IFPEN Transports Energie, Rueil-Malmaison (France)
  4. General Motors Research & Development, Warren, MI (United States)
  5. Delhi Powertrain Systems
  6. Univ. of Massachusetts, Amherst, MA (United States)
  7. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
+ Show Author Affiliations

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
Grant/Contract Number:
AC02-06CH11357; NA-0003525
OSTI ID:
1392620
Alternate ID(s):
OSTI ID: 1698121
Journal Information:
Experimental Thermal and Fluid Science, Vol. 88, Issue C; ISSN 0894-1777
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

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Cited By (4)

Validation of a comprehensive computational fluid dynamics methodology to predict the direct injection process of gasoline sprays using Spray G experimental data journal August 2019
Development of limited-view tomography for measurement of Spray G plume direction and liquid volume fraction journal January 2020
An investigation on the impact of small-scale models in gasoline direct injection sprays (ECN Spray G) journal November 2019
Spray characterization for engine combustion network Spray G injector using high-fidelity simulation with detailed injector geometry journal September 2019

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