DMC及びDMC＋の混合がSI機関の火炎伝播及び燃焼特性に及ぼす影響

抄録

In this study, we investigated the effect of the chemical composition of the fuel on the combustion characteristics when dimethyl carbonate (DMC) and DMC+ is dropped into an existing fuel. In this study, combustion behavior was observed using an optically accessible engine capable of flame velocity analysis. As a result, when DMC and DMC+ was blend in the existing fuel, the flame propagation speed decreased, and the fuel containing 40% DMC+ showed the smallest value. In addition, under the spark plug washer temperature Tsp= 473 K condition of DMC+80, combustion was unstable and continuous operation could not be performed. On the other hand, under the DMC+80 condition of Tsp=573 K, improvements were found in combustion stability and maximum heat release.