SCR장치에서 우레아 분사에 관한 연구

Urea-SCR system has been known so far to one of effective aftertreatment for the reduction of NOx. In order to achieve an better performance in SCR system, optimal geometric conditions for a urea injection system should be achieved. This research focused to evaluate characteristics of urea spray injected SCR system of a heavy duty diesel engine by applying visualization techniques. The experiment was conducted by varying injection pressure and flow rates of urea and its flow visualization was made by photographing techniques of CCD camera. This investigation may provide with fundamental data in future.