Engine Combustion Network (Ecn): Measurements of Nozzle Geometry and Hydraulic Behavior

Kastengren, Alan L.; Tilocco, F. Zak; Powell, Christopher F.; Manin, Julien; Pickett, Lyle M.; Payri, Raúl; Bazyn, Tim

doi:10.1615/atomizspr.2013006309

Cited by 122 publications

(138 citation statements)

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“…The injector employed, is part of the ECN injector dataset (ref: #210675 [9]). It features a singlehole axial nozzle which simplifies visualization and localizes the problem into one single spray.…”

Section: The Injection Systemmentioning

confidence: 99%

“…Moreover, it is important to note that the internal geometry [24] and hydraulic behavior of ECN injectors have been well characterized and the data is published in [9] and available online. The fuel surrogate utilized for this study (from this point forward, referred to as SR23) is composed of 77% n-dodecane and 23% m-xylene (by volume).…”

Section: The Injection Systemmentioning

confidence: 99%

“…The Engine Combustion Network (ECN) [6][7] [9], is a worldwide initiative that brings together a group of research institutions that perform both experiments and numerical simulations, whose aim is to enhance the knowledge of spray and combustion processes at engine-relevant conditions. This initiative has permitted the construction of a large, public set of experimental data based on a particular operating condition: the so called "Spray A" condition, which is a lowtemperature combustion condition relevant to engines that use moderate EGR.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental and numerical study of lift-off length and ignition delay of a two-component diesel surrogate

Payri

Viera

Pei

et al. 2015

Fuel

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Elsevier Payri, R.; Viera Sotillo, JP.; Pei, Y.; Som, S. (2015). Experimental and numerical study of liftoff length and ignition delay of a two-component diesel surrogate. AbstractUnderstanding and controlling mixing and combustion processes is fundamental for the ever more demanding pollutant regulations and fuel consumption standards of direct injection diesel engines. The fundamentals of these processes haven been long studied from both experimental and numerical perspectives. As numerical models become more advanced, the need for adequate experimental data increases. Hence, experimental methodologies and scientific databases need to be enhanced with more quantitative, accurate, consistent, and reliable information in order to evaluate the models in a robust fashion. The present study seeks to enhance the current state-of-the-art by further evaluating the combustion performance of a two-

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Section: The Injection Systemmentioning

confidence: 99%

Section: The Injection Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical study of lift-off length and ignition delay of a two-component diesel surrogate

Payri

Viera

Pei

et al. 2015

Fuel

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“…The injector features a single-hole axial nozzle enabling the advantage to focus on the fundamental behavior of the spray eliminating both the effects and the uncertainties related to the temperature boundary layer close to the walls and the sprayspray interaction. Moreover, ECN injectors' internal geometry and hydraulic behavior has been deeply characterized and the data are available in [17].…”

Section: The Injection Systemmentioning

confidence: 99%

Experimental characterization of diesel ignition and lift-off length using a single-hole ECN injector

Benajes

Payri

Bardi

et al. 2013

Applied Thermal Engineering

149

126

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“…The Engine Combustion Network (ECN) seeks to address the problem of facility 40 limitations and variability through the specification of standard injectors and conditions [50]. Prior ECN work on diesel direct injection [45,51] has now been extended to encompass GDI through the Spray G specification.…”

mentioning

confidence: 99%

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

Duke

Kastengren

Matusik

et al. 2017

Experimental Thermal and Fluid Science

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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. These factors increase the likelihood of spray collapse with longer injection durations.

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Engine Combustion Network (Ecn): Measurements of Nozzle Geometry and Hydraulic Behavior

Cited by 122 publications

References 0 publications

Experimental and numerical study of lift-off length and ignition delay of a two-component diesel surrogate

Experimental and numerical study of lift-off length and ignition delay of a two-component diesel surrogate

Experimental characterization of diesel ignition and lift-off length using a single-hole ECN injector

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

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