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http://dx.doi.org/10.3795/KSME-B.2006.30.7.682

A Study on Evaporative Characteristics of Multi-component Mixed Fuels Using Mie Scattered Light and Shadowgraph Images  

Yoon, Jun-Kyu (경원전문대학 자동차과)
Myong, Kwang-Jae (일본 교통안전환경연구소 환경연구부)
Jiro Senda (일본 동지사대학 기계공학과)
Fujimoto Hajime (일본 동지사대학 기계공학과)
Cha, Kyung-Ok (명지대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.30, no.7, 2006 , pp. 682-691 More about this Journal
Abstract
This study was conducted to assess the effect of mixed fuel composition and mass fraction on spray inner structure in evaporating transient spray under the various ambient conditions. Spray structure and spatial distribution of liquid phase concentration are investigated using a thin laser sheet illumination technique on the multi-component mixed fuels. A pulsed Ar+ laser was used as a light source. The experiments were conducted in a constant volume vessel with optical access. Fuel was injected into the vessel with electronically controlled common rail injector. Used fuel contain $i-octane(C_8H_{18}),\;n-dodecane(C_{12}H_{26})$ and $n-hexadecane(C_{16}H_{34})$ that are selected as low-, middle- and high-boiling point fuel, respectively. Experimental conditions are 25Mpa, 42MPa, 72MPa and 112MPa in injection pressure, $5kg/m^3,\;15kg/m^3\;and\;20kg/m^3$ in ambient gas density, 400K, 500K, 600K and 700K in ambient gas temperature, 300K and 368K in fuel temperature, and different fuel mass fraction. Experimental results indicate that the more high-boiling point component, the longer the liquid phase it were closely related to fuel physical properties, but injection pressure had no effect on. And there was a high correlation between the liquid phase length and boiling temperature at 75% distillation point.
Keywords
Multi-component Mixed Fuels; Mie Scattered Light; Evaporative Characteristics; Liquid Length;
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