年次大会講演論文集
Online ISSN : 2433-1325
会議情報
2010 DME を燃料とした予混合圧縮着火燃焼機関の冷炎熱発生量に対する O_2 濃度の影響
佐橋 和歌子及川 親畔津 昭彦
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会議録・要旨集 フリー

p. 111-112

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抄録
The compression ignition of Dimethyl Ether has two stages of combustion, which were known as cool and hot flame respectively. Since the temperature and pressure of mixture was increased by the heat release during cool flame, the amount of heat release during cool flame has strong effects on ignition of hot flame. In this paper, the effects of N_2/CO_2 addition on heat release of cool flame were investigated from experiments and computations. The heat release on cool flame was reduced with N_2 addition, however, it was increased with CO_2 addition. From the systematic experiments and chemical kinetic computations, it was confirmed that the amount of heat release at cool flame depends strongly on the concentration of O_2at cool flame onset.
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