Analysis of Ethanol Spray Produced by Direct Injection into a Single Cylinder Optical Research Engine

Guzzo, Márcio Expedito; Costa, Roberto Berlini Rodrigues da; Júnior, Carlos Alberto Araújo; Rocha, Deborah Domingos da; Reis, Leonardo Mayer; Barros, José Eduardo Mautone; Pujatti, Fabrício José Pacheco

doi:10.4271/2014-36-0345

Cited by 4 publications

(1 citation statement)

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“…Many researchers use images from spray to study the direct injection, especially for the diesel spray [2], [3] and also for in-cylinder conditions using an optical engine [4].…”

Section: Introductionmentioning

confidence: 99%

Macroscopic Analysis of Spray Development Using Direct Injection for Studying Ethanol Fuel Behavior

Guzzo¹,

Gomes²,

Costa³

et al. 2015

AMM

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A great difficulty in spray analysis is the intrinsic subjectivity in the manual measurements of macroscopic spray characteristics. Within its contexts this work has the main objective to demonstrate a systematic methodology for the spray analysis adopted for acquiring the data results based on numerical criterion dealing with the numerical matrices that represent the spray images. The results shown in this work refers to EXXSOL D60 injection, a tested fluid used to simulate ethanol spray characteristics. The characteristics analyzed were spray penetration, spray pattern at various moments after start of injection and the total volume of the cone spray also as a function of time. The methodology applied uses the numerical matrices of images in different stages of injections. A computational routine written in Matlab environment deals with the numerical matrices of the spray images to localize the spray boundaries based on a numerical criterion. All the subsequent analysis is then performed with the boundaries location data in hand. The results show higher growth of penetration in the beginning of injections, higher displacements of the bottom part of the spray also in the beginning of injections and a linear growth of spray volume injected. The importance of all the results acquired in this work demonstrated that the proposed methodology is suitable for spray analysis.

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“…Many researchers use images from spray to study the direct injection, especially for the diesel spray [2], [3] and also for in-cylinder conditions using an optical engine [4].…”

Section: Introductionmentioning

confidence: 99%