2012
DOI: 10.1021/ef3008823
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Combination of Visualization Techniques for the Analysis of Evaporating Diesel Sprays

Abstract: ResumenLa clave para reducir la formación de contaminantes, emisiones y aumentar la eficiencia en los motores de inyección directa diésel radica en entender y tener la capacidad de predecir los procesos de inyección, mezcla, evaporación y combustión. Con este objetivo, los distintos grupos de investigación y desarrollo de motores han intentado, durante décadas, comprender y describir mejor los fundamentos de estos procesos, incluyendo combustibles alternativos y estrategias de combustión novedosas. Los chorros… Show more

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Cited by 19 publications
(14 citation statements)
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“…The optical set-up used to capture the spray macroscopic parameters (vapor penetration), is a double pass Schlieren system [20]. The optical technique consists on directing a collimated beam of light through the test zone (i.e injection spray), and gathering the beam again in the camera sensor filtering or discarding some of the deflected light, to finally form a shadowgraph in which different pixel intensities represent different refractive indexes in the region of interest [21]. Being a multi-hole nozzle injector, frontal visualization was necessary to capture all the spray plumes.…”
Section: Schlieren Imagingmentioning
confidence: 99%
“…The optical set-up used to capture the spray macroscopic parameters (vapor penetration), is a double pass Schlieren system [20]. The optical technique consists on directing a collimated beam of light through the test zone (i.e injection spray), and gathering the beam again in the camera sensor filtering or discarding some of the deflected light, to finally form a shadowgraph in which different pixel intensities represent different refractive indexes in the region of interest [21]. Being a multi-hole nozzle injector, frontal visualization was necessary to capture all the spray plumes.…”
Section: Schlieren Imagingmentioning
confidence: 99%
“…Mie-scattering technique is used to visualize the liquid spray penetration. Traditionally, Mie-scattering is setup in a frontal view configuration for diesel multi-hole injectors [47][48][49]. In this configuration, the sensor of the camera is placed in a perpendicular plane with respect to the fuel injector axis, allowing the simultaneous visualization of multiple sprays in a single image.…”
Section: Uthmentioning
confidence: 99%
“…Mie-scattering technique was used to characterize the liquid spray [31]. In this technique, the spray was illuminated with two continuous high-intensity light sources.…”
Section: Liquid Spray Visualizationmentioning
confidence: 99%
“…These light beams passed through the vessel and were refracted when passing through the spray due to its different refractive index. By positioning the CCD camera on the opposite side to the light source, it received only the light that has passed through the vessel without changing direction, and consequently created a negative image of the spray contour, including both liquid and vapor phases [31]. An schematic is shown in Fig.…”
Section: Vapor Spray Visualizationmentioning
confidence: 99%