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맵 기반 제어 알고리즘 Urea 분사시스템을 장착한 승용디젤자동차의 배출가스 성능 특성

Title
맵 기반 제어 알고리즘 Urea 분사시스템을 장착한 승용디젤자동차의 배출가스 성능 특성
Other Titles
Emission Characteristics of Diesel Passenger Car with Urea Dosing System of Map-based Control Algorithm
Author
김우승
Keywords
SCR(Selective Catalytic Reduction, 선택적환원촉매); Urea(요소); NH₃(암모니아); NOx(질소산화물); NEDC(New European Driving Cycle)
Issue Date
2009-09
Publisher
한국자동차공학회
Citation
2009년 학술대회 및 전시회, Page. 891-898
Abstract
The selective catalytic reduction(SCR) system is a highly-effective aftertreatment device for NOx reduction of diesel engines. Generally, the ammonia(NH₃) was generated from reaction mechanism of urea solution in the SCR system using the liquid urea as the reductant. Therefore, the precise urea dosing control is a very important key factor for reducing NOx and NH₃ slip in the SCR system. This paper discussed about emission characteristics of diesel passenger car with urea dosing system of map-based control algorithm. In the map-based control algorithm of this study, the urea injection was determined by mass flow rate of exhaust gas based on the engine rpm, torque, O₂ and NOx concentration measured by NOx sensor. Finally, this paper investigated the characteristics of NOx emission and NH₃ slip of diesel SCR exhaust system under NEDC mode by using the optimized map-based dosing control algorithm.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE01505317http://repository.hanyang.ac.kr/handle/20.500.11754/104089
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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