Characteristics of Gas-Dessolved Diesel Fuel Spray : Spray Characteristics and Simulating Flash Boiling Process

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概要

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• A new injection system using mixed fuel dissolved with liquefied CO_2 is proposed in this paper. Liquefied CO_2 is mixed with n-Tridecane under pressure in order to promote spray atomization and evaporation due to the effect of the flash boiling phenomenon during fuel injection, and to control the combustion process due to the effect of the internal exhaust gas recirculation (EGR) effct of CO_2 gas. Therefore, a simultaneous recduction of soot and NO_x is achieved effectively using this injection system. In this study, the characteristics of diesel fuel spray dissolved with liquefied CO_2 are investigated quantitatively by several optical measurements. The spray characteristics are revealed by analyzing the chemical thermodynamics. As a result, it is determined that atomization of this fuel is promoted by flash boiling much more than in n-Tridecane, which is normal reference fuel, and the spray structure is considerably different from that of the normal fuel. Moreover, the numerical analysis of atomization and vaporization processes are carried out, based on the flash boiling spray model.

• 一般社団法人日本機械学会の論文
• 2000-08-15

著者

• FUJIMOTO Hajime

  Department of Cardiovascular Center, Toranomon Hospital

• Senda Jiro

  Department Of Mechanical Engineering Doshisha University

• Fujimoto Hajime

  Department Of Cardiovascular Center Medicine Toranomon Hospital

• ASAI Takatsugu

  Graduate School of Mechanical Engineering, Doshisha University

• KAWAGUCHI Bungo

  Graduate School of Mechanical Engineering, Doshisha University

• Asai Takatsugu

  Graduate School Of Mechanical Engineering Doshisha University

• Kawaguchi Bungo

  Graduate School Of Mechanical Engineering Doshisha University

• Fujimoto Hajime

  Department of Cardiology, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan

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