4711 ディーゼルエンジンから排出されるPMの性状に及ぼす燃料添加剤の影響(S56-2 エンジン燃焼-さらなる進化を目指して-(2),S56 エンジン燃焼-さらなる進化を目指して-)

概要

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It has been received much attention that nano-PM is bad for health. Therefore, PM characteristics in exhaust gas from diesel engine with fuel additives were investigated. The blend ratio of benzene in test fuel was changed from 0% to 30% and ferrocene was mixed. The excess air ratio of a DI diesel engine was changed from 0.7 to 3.0. The engine speed was set to 1080rpm and the fuel injection timing was set to 22deg. BTDC. The components of PM such as Dry soot, SOF and Sulfate were measured by a PM analyzer. The size of primary particles and aggregate were measured. In addition, the size distributions of agglomerate were analyzed by SMPS and ELPI. In case of ferrocene mixed fuel, the primary, particles were smaller and the aggregate were larger than in the case of the other fuels. Further, nano-particles below 50nm increased. From the comparison of PM component between λ=1.0 and 2.2, it was clear that PM components of two conditions were different even if the size distributions were similar.
社団法人日本機械学会の論文
2006-09-15