| 제목 |
노후 비도로용 차량의 배출가스 저감을 위한 SDPF 시스템의 버너 활용 가능성에 대한 연구 |
| 분야 |
연료 및 배기 |
| 언어 |
Korean |
| 저자 |
강원모(과학기술연합대학원대학교), 장형준(한국기계연구원), 우상희(한국기계연구원), 이상호(한국기계연구원), 이상경(에코닉스), 김홍석(한국기계연구원) |
| Key Words |
SCR(선택적촉매환원), Burner(버너), Soot oxidation(매연입자 산화), DPF passive regeneration(DPF 자연 재생), Numerical analysis(수치해석), Vehicle test(실차시험) |
| 초록 |
When the SCR catalyst is coated on DPF instead of oxidation catalyst, the performance of DPF passive regeneration may be reduced. Consequently, it has been attempted to use a burner to enhance the performance of NOx removal and passive soot regeneration. This study sought to verify the feasibility of burner application in the SDPF system through a simple numerical analysis. Well-known chemical kinetics are considered in the numerical analysis to calculate soot oxidation in DPF and NOx conversion in SCR. All data necessary for calculations such as torque, power, emissions of engine, NO oxidation rate in DOC and etc. were obtained from experiments. Results showed that raising the target temperature of the burner was advantageous during SDPF passive regeneration. When the inlet temperature of SDPF was increased from 400 °C to 500 °C, the regeneration time of SDPF could be reduced from 24 % to 2.5 %. When a burner is used for NOx reduction, high burner target temperature has no significant effect on the improvement of NOx reduction rate, and it even makes fuel penalty worse. When the exhaust gas temperature was controlled at 220 °C, the NOx reduction rate was improved by 8.5 % with a fuel penalty of 3 %. |
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