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Laser Diagnostics of Spray and Combustion Characteristics Using Multi-Component Mixed Fuels in a D.I. Diesel Engine  

Yoon, Jun-Kyu (Department of Automotive Engineering, Kyungwon College)
Myong, Kwang-Jae (Environment Research Department, National Traffic and Environment Laboratory)
Senda, Jiro (Department of Mechanical Engineering, Doshisha University)
Fujimoto, Hajime (Department of Mechanical Engineering, Doshisha University)
Cha, Kyung-Ok (Department of Mechanical Engineering, Myongji University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.14, no.5, 2006 , pp. 172-180 More about this Journal
Abstract
This study was to analyze the effect of mixed fuel composition and mass fraction on the characteristics of evaporating diesel spray and combustion under the various ambient conditions. The characteristics of vaporization distribution and combustion were visualized by laser induced fluorescent method and direct photography. The experiments were conducted in the constant volume vessel and rapid compression expansion machine with optical access. Multi-component fuels mixed i-octane, n-dodecane and n-hexadecane were injected the vessel and rapid compression expansion machine with electronically controlled common rail injector. Experimental results show that fuel vapor formed stratified distribution. And vaporization and diffusion are become actively increasing in mass fraction of low boiling point component. Consequently multi-component fuels were expected to control the evaporating behavior according to their suitable mass fraction.
Keywords
Diesel spray; Multi-component mixed fuels; Laser induced fluorescent method; Fluorescent intensity; Heat release rate;
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