著者

三輪 惠 武内 久 江口 知孝 楊 長林

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. B編 (ISSN:03875016)

巻号頁・発行日

vol.65, no.638, pp.3517-3522, 1999-10-25

参考文献数

13

被引用文献数

4

---

In order to realize simultaneous reduction of NO_x 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 NO_x, 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, NO_x and particulate decreased simultaneously due to retarded injection timing and the intensified squish.