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다구찌 기법을 이용한 Off-road 디젤 엔진 배기가스 특성의 강건 설계에 관한 연구
안중규(Juengkyu Ahn),정진은(Jineun Chung),강정호(Jeongho Kang),하형수(Hyeongsoo Ha),박찬수(Chansu Park),표수강(Sukang Pyo) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
This paper deals with the robust design of the diesel engine on off-road. In order to this, the measurement of the NOx and PM emission based on the design of experiment using the orthogonal table was carried out and the control factors for exhaust using the small-the-better SN ratio with the Taguchi method were evaluated. The ANOVA for SN ratio was conducted. The injector hole number, ignition timing and EGR rate were selected as the control factors. The orthogonal table L9(3³) was made of 2 or 3 levels for each factor and the measurement of emission was accomplished on the base of the table. The injection timing on the NOx emission and the EGR rate on the PM emission affect the largest effect. A result of the analysis of variance to this, the injection timing of the experiments for PM emission is significant with 90% confidence level. And, in other situations, it is clarified that it is significant with 95%.