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A Study on Development Process of Evaporating Diesel Spray  

Yeom, Jeong-Kuk (Division of Mechanical Engineering, Dong-A University)
Park, Jong-Sang (Division of Mechanical Engineering, Dong-A University)
Chung, Sung-Sik (Division of Mechanical Engineering, Dong-A University)
Ha, Jong-Yul (Division of Mechanical Engineering, Dong-A University)
Kim, Si-Pom (Division of Mechanical Engineering, Dong-A University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.15, no.3, 2007 , pp. 141-146 More about this Journal
Abstract
In this study, the effects of change in ambient gas viscosity on spray structure have been investigated in the high temperature and pressure field. To analyze the structure of evaporative diesel spray is important in speculation of mixture formation process. Emissions of diesel engines can be reduced by the control of the mixture formation process. Therefore, this study examines the evaporating spray structure in the constant volume chamber. The viscosity of ambient gas was selected as the experimental parameter, is changed from 21.7 mPa s to 32.1 mPa s by changing in ambient gas temperature. In order to obtain images of the liquid and vapor-phase of injected spray, exciplex fluorescence method was used in this study. The liquid and vapor-phase images were taken with 35mm still camera and CCD camera, respectively. Consequentially, it could be confirmed that the distribution of vapor concentration is more uniform in the case of the ambient gas with high viscosity than in that of the ambient gas with low viscosity.
Keywords
Liquid phase; Vapor phase; Diesel spray; Viscosity; Exciplex fluorescence Method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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