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雾化与喷雾
影响因子: 1.737 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.2015011547
pages 1047-1062

CHARACTERIZATION OF n-BUTANOL AND GASOLINE SPRAY FROM A MULTIHOLE INJECTOR USING PHASE DOPPLER ANEMOMETRY

S. Nava Igual
Escuela Tecnica Superior de Ingenieros Industriales, University of Malaga, Malaga, Spain
Luca Marchitto
Istituto Motori-CNR
Simona Silvia Merola
Istituto Motori − CNR, Via G. Marconi 4, 80125 Naples, Italy
C. Tornatore
Istituto Motori, CNR, Naples, Italy
G. Valentino
IstitutoMotori, CNR, Naples, 80125, Italy

ABSTRACT

This work reports results of an experimental investigation carried out on a multihole injector for direct injection spark ignition engines by using phase Doppler anemometry (PDA). Results of droplet size and velocity were compared testing n-butanol and gasoline injected at 5 and 10 MPa in a vessel at atmospheric pressure and ambient temperature. Experiments were focused on the characterization of the dynamic behavior of droplet size and velocity acquired on the axis and the edge of one of the jets at different distances from the nozzle hole. The effect of the injection interval and the photomultiplier voltage on the sample distribution was investigated. It was found that these parameters have a strong influence on data validation and their fine tuning can avoid the occurrence of time intervals with lack of validated data. Different post-processing filtering methods were applied in order to evaluate differences linked to the data statistical distributions. Results have highlighted that the different fuel properties have an influence on the droplet size and velocity and affect the jet dynamic behavior.


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