ディーゼル機関の赤外域火災分光による燃焼解明の一研究

―2次噴射等が燃焼に及ぼす影響―

抄録

Spectroscopic analysis of combustion flames is effective to elucidate the diesel combustion phenomena. The authors operated a DI engine generating a secondary injection, with various injection volumes and ignition timings, and detected diesel flame spectra by inserting of a heatresisting optical fiber into the combustion chamber. As the result, they made clear the influence of the secondary injection on the diesel combustion. Further, they confirmed the existence of band spectra emitted from OH-radical, H₂O, and some substances in the infrared ranges, and made partially clear the relation of the behavior of band spectra with the combustion phenomena.