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Urea-SCR System의 Mixer 구조에 따른 NOx 정화율 및 유동 혼합 특성에 관한 연구
고상철(Sangchul Ko),정종화(Jong-Hwa Jeung),오광철(Kwangchul Oh),김형구(Hyeonggu Kim),이천환(Cheonhwan Lee),이춘범(Chunbeom Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Euro-6 regulations introduce stringent Oxides of Nitrogen(NOx) reduction targets for diesel engines. Reduction of NOx by Urea over catalyst has become one of the main solutions. In this study, as a way to increase the NOx reduction rate, mixer was used. There was installing Mixer to agent homogeneous urea distribution in front of the SCR catalyst to improve the Nox reduction rate between the injector and SCR. Mixer lengths, angle and fixing ring of the blade of the impact on NOx reduction rate and NOx distribution at downstream of SCR were analyzed.