동적특성을 고려한 디젤엔진 흡배기 시스템의 상태추정 모델
- Title
- 동적특성을 고려한 디젤엔진 흡배기 시스템의 상태추정 모델
- Other Titles
- Air System Modeling for State Estimation of a Diesel Engine with Consideration of Dynamic Characteristics
- Author
- 선우명호
- Keywords
- 흡배기 시스템 모델; 엔진 모델링; 디젤엔진; 상태추정
- Issue Date
- 2014-05
- Publisher
- 한국자동차공학회, 2014.
- Citation
- 한국자동차공학회논문집, 2014, 22(4), P.36-45
- Abstract
- Model based control methods are widely used to improve the control performance of diesel engine air systems because the control results of the air system significantly affect the emission level and drivability. However, the model based control algorithm requires a lot of unmeasurable states which are hard to be measured in a mass production engine. In this study, an air system model of the diesel engine is proposed to estimate 11 unmeasurable states using only sensors equipped in a mass production engine. In order to improve the estimation performance in the transient condition, dynamic characteristics of the air system are analyzed and implemented as discrete filters. Turbine and compressor efficiency models are also proposed to overcome a limitation of the constant or look-up table based efficiency values. The proposed air system model was validated in steady state and transient conditions by real-time engine experiments. The maximum error of the estimation for 11 physical states was 11.7%.
- URI
- http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JDCGCC_2014_v22n4_36
- ISSN
- 1225-6382; 2234-0149
- DOI
- 10.7467/KSAE.2014.22.4.036
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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