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Atomization and Sprays
Factor de Impacto: 1.262 Factor de Impacto de 5 años: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v6.i5.20
pages 537-562

PULSED-FUEL-SPRAY VAPOR-PHASE CHARACTERIZATION

P. D. Jennings
Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri — Rolla, MO 65401
James A. Drallmeier
Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, USA

SINOPSIS

This study examines the use of the infrared extinction technique to measure spatial and temporal fuel vapor distributions in pulsed evaporating sprays. An infrared extinction instrument with collinear visible and infrared laser beams was designed and constructed. The instrument configuration was validated using a methane absorption cell in conjunction with a nonabsorbing liquid spray. A production automotive fuel injector using isooctane as the fuel was quantitatively characterized. Vapor results from the injector were obtained in a time-resolved manner with a temporal resolution of 0.2 ms. The spray was interrogated at several axial positions. Additionally, the results were smoothed and deconvoluted to provide spatially resolved, quantitative vapor-phase information for the spray. Discussion is provided regarding the liquid and vapor distributions in the transient spray environment.


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