301 DME圧縮点火機関に関する研究(OS3-(1)オーガナイズドセッション《環境とエネルギー》)

概要

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The compression ignition engines using dimethyl ether as an alternative fuel (DME C.I.engines) is necessary to promote the mixing fuel and air. Therefore, the effects of the combustion chamber configurations, injection methods and injection pressures on the engine performances and the exhaust emission are examined experimentally. As a result, two stage injection (Pre injection) is effective to reduce NOx at injection pressure with 40 to 80[MPa]. In the case of Pre injection ratio with 5[Mass%] with injection pressure at 80[MPa] using the Toroidal combustion chamber, the concentration of NOx emission is reduced about 26.1[%] as compared with that of single stage injection. And the brake thermal efficiency is maintained the same as in the single stage injection with the injection pressure at 40[MPa].
一般社団法人日本機械学会の論文
2010-08-27