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김태섭(T.S Kim),박정근(J.K Park),백중현(J.H. Baek),이동인(D.I Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
It is well known that two representative methods satisfy the condition of Euro4 regulation. The first method is the reduction of NOx in an engine operation by utilizing EGR and the elimination of high NOx concentraion. Second method, the conentraiton of PM produced by high efficiency combustion sufficiently meets the requirement of regulation. and NOx generated in this process can be removed by SCR system. While it has better fuel efficiency than the first method mentioned above. urea supply infrastructure is demanded. In this paper summarized the contents which attain the efficiency of the optimum target Euro4 based on Euro3 engine using design of experiment. This paper selected wider spray angle and changed bowl shape for optimize combustion. So, Injector sample had two types. Also Piston bowl spahe had two types. Then, it obtains low PM ami high NOx. The NOx concentration is belowed target point that is considered the reduction by SCR system. At last, it is satisfied for emission target.