실험계획법을 이용한 디젤 엔진 작동 변수 최적화에 대한 연구

In this paper, DOE analysis was carried out to investigate the effects of the main injection timing, pilot injection timing, quantity of pilot injection, rail pressure, EGR rate and emissions in an HSDI diesel engine, aiming to find out the optimal combination between all the abovementioned parameters. The other parameters which can affect engine operation are fixed. An operating point is 1500 rpm and 4 bar of bmep. This research was performed on a in-line 4 cylinder, 2497cc, HSDI diesel engine. A full factorial Design Of Experiments(DOE) analysis was carried out in order to find out the optimal combination between above parameters aiming to reach the lowest brake specific fuel consumption value while complying with NOx emission and smoke constraints. For finding the optimal combination between parameters, genetic algorithm was used in.