Comparison of Diesel Spray Combustion in Different High-temperature, High-pressure Facilities

Lyle M. Pickett (Invited author), Caroline L. Genzale (Invited author), Gilles Bruneaux (Invited author), Louis-Marie Malbec (Invited author), Laurent Hermant (Invited author), Caspar Ask Christiansen (Invited author), Jesper Schramm (Invited author)

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Diesel spray experimentation at controlled high-temperature and high-pressure conditions is intended to provide a more fundamental understanding of diesel combustion than can be achieved in engine experiments. This level of understanding is needed to develop the high-fidelity multi-scale CFD models that will be used to optimize future engine designs. Several spray chamber facilities capable of high-temperature, high-pressure conditions typical of engine combustion have been developed, but because of the uniqueness of each facility, there are uncertainties about their operation. For this paper, we describe results from comparative studies using constant-volume vessels at Sandia National Laboratories and IFP. Targeting the same ambient gas conditions (900 K, 60 bar, 22.8 kg/m 3 , 15% oxygen) and using the same injector specifications (common rail, 1500 bar, KS 1.5/86 nozzle, 0.090 mm orifice diameter, n-dodecane, 363 K), we describe detailed measurements of the temperature and pressure boundary conditions at each facility, followed by observations of spray penetration, ignition, and combustion using high-speed imaging. The spray diagnostics show reasonable similarity despite the challenges of providing matched boundary conditions at these unique facilities. Performing experiments at the same high-temperature, high-pressure operating conditions is an objective of the Engine Combustion Network (http://www.ca.sandia.gov/ECN/), which seeks to leverage the research capabilities and advanced diagnostics of all participants in the ECN. Thus, in addition to the presentation of a comparative study, this paper demonstrates steps that are needed for other interested groups to participate in ECN spray research. We expect that this collaborative effort will generate a high-quality dataset to be used for advanced computational model development at engine conditions.
Original languageEnglish
JournalS A E International Journal of Engines
Volume3
Issue number2
Pages (from-to)156-181
ISSN1946-3936
DOIs
Publication statusPublished - 2010
EventSAE 2010 Powertrains Fuels & Lubricants Meeting - San Diego, Calif.
Duration: 1 Jan 2010 → …

Conference

ConferenceSAE 2010 Powertrains Fuels & Lubricants Meeting
CitySan Diego, Calif.
Period01/01/2010 → …

Bibliographical note

Paper number: 2010-01-2106

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