승용디젤엔진의 연료분사 제어를 통한 LNT 촉매의 NOx 저감 특성에 관한 연구A Study on NOx Reduction Characteristics of LNT Catalyst with Fuel Injection Control in Light-duty Diesel Engine
- Other Titles
- A Study on NOx Reduction Characteristics of LNT Catalyst with Fuel Injection Control in Light-duty Diesel Engine
- Authors
- 황승권; 고아현; 윤주웅; 명차리; 박심수; 김은석
- Issue Date
- 2012
- Publisher
- 한국자동차공학회
- Keywords
- LNT(흡장형 질소산화물 저감 촉매); NOx(질소산화물); Regeneration(재생); Lambda(공기과잉률); Reductant(환원제); Conversion efficiency(정화 효율)
- Citation
- 한국자동차공학회 논문집, v.20, no.4, pp.150 - 155
- Indexed
- KCI
- Journal Title
- 한국자동차공학회 논문집
- Volume
- 20
- Number
- 4
- Start Page
- 150
- End Page
- 155
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/109850
- DOI
- 10.7467/KSAE.2012.20.4.150
- ISSN
- 1225-6382
- Abstract
- Lean NOx Trap (LNT) catalysts are capable of reducing exhaust NOx emissions from diesel engines. LNT stores NOx in lean condition and exhausts N2 by reducing NOx in rich condition. NOx reduction characteristic of LNT catalysts using throttle position sensor and fuel injection timing control for light-duty diesel engine was investigated. In contrast to SCR system, LNT catalyst uses diesel fuel in resuctant. Also if the concentration of reductant is exceeded, excessive amount of reductant will slip throughout LNT and cause another emission problem. Thus LNT regeneration with precise engine control established that can make higher NOx conversion efficiency and lower fuel penalty, prevent another emission problem. NOx and reductant concentration were measured by the NOx sensor and Mexa7100D equipped inlet and outlet of catalyst. As a result of engine test, regeneration strategy has reached high of 77.8% NOx conversion efficiency according to engine operation condition. Moreover, we have proved that it is possible to use regeneration strategy of LNT within 5% fuel penalty.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.