高スキッシュ型燃焼室によるディーゼル微粒子とNOxの同時低減に関する研究
1999 年 65 巻 638 号 p. 3517-3522
詳細
1999 年 65 巻 638 号 p. 3517-3522
In order to realize simultaneous reduction of NOx and Particulate emissions, effects of combustion chamber geometry were investigated in a high speed direct-injection diesel engine. The reentrant combustion chambers with different throat diameter were compared in terms of engine performance, combustion characteristics and emissions such as NOx, particulate and THC. The phenomena of combustion process were also observed with endoscopic high speed photography. The results showed that when the throat diameter of a reentrant combustion chamber was reduced to an extent, NOx and particulate decreased simultaneously due to retarded injection timing and the intensified squish.
