小型ディーゼル機関の吸気管へのエタノール噴射による排気特性に関する一考察

‐特に噴射圧力の影響‐

抄録

This research aimed to reduce NOx by injecting an aqueous ethanol solution into the intake pipe of a diesel engine. Previous studies have revealed the effects of aqueous solution concentration and intake pipe temperature on combustion products. In this study, we focused on the injection pressure of aqueous ethanol solution and also investigated the spray particle size and engine load. As a result, increasing the injection pressure reduced the spray particle size, and the latent heat of evaporation reduced NOx. Furthermore, it was confirmed that NOx concentration was reduced by 44% when the without engine load and 12% at high engine load of 1800W, respectively.