An Experimental Study on the Reduction of Emissions in a Turbocheged D.I. Diesel Engine

터보과급기를 장착한 직접분사식 디젤엔진의 배출 가스저감에 관한 실험적 연구

This study was experimentally analyzed to improve the performance and to reduce exhaust emissions in a turbochaged D.I. diesel engine of the displacement 9.4L. In generally, the system of intake port, fuel injection and turbocharger are very important factors which have influence on the engine performance and exhaust emission because the properties in the injected fuel depend on the combustion characteristics. The optimum results which is tested as available factors fur better performance and emission are as follows; the swirl ratio is 2.43, compression ratio is 16, combustion bowl is $5^{\circ}$ re-entrant type, nozzle hole diameter is ${\phi}0.28*6$, injection timing is BTDC $13^{\circ}CA$ and turbocharger is GT40 model which are selected compressor A/R 0.58 and turbine A/R 1.19.