가솔린기관의 냉시동시 촉매 가열 촉진을 위한 점화시기 영향에 대한 실험적 연구
An Experimental Study on Spark Timing Effect for Fast warmup of Catalyst to Cold Start Operation of an SI Engine
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
On cold start operation of an SI engine, a catalyst shows poor performance before it reaches activation temperature. Therefore, fast warmup of the catalyst is very crucial to reduce harmful emissions. In this study,an appropriate control strategy is investigated to increase exhaust gas temperature through changes of spark timing. Combustion stability is also considered at the same time. Exhaust gas temperature and pressure of combustion chamber are measured to investigate the effects of spark timings on cold start and idle performance. Experiments showed that retarded spark timing promotes the combustion at the end of expansion stroke and increases exhaust gas temperature during cold start.
Abstract
On cold start operation of an SI engine, a catalyst shows poor performance before it reaches activation temperature. Therefore, fast warmup of the catalyst is very crucial to reduce harmful emissions. In this study,an appropriate control strategy is investigated to increase exhaust gas temperature through changes of spark timing. Combustion stability is also considered at the same time. Exhaust gas temperature and pressure of combustion chamber are measured to investigate the effects of spark timings on cold start and idle performance. Experiments showed that retarded spark timing promotes the combustion at the end of expansion stroke and increases exhaust gas temperature during cold start.
참고문헌 (7)
- Y.K.Gwon, "Trends of Automotive Catalyst Technologies for Low Emission Vehicle", KSAE journal, 24(1), pp.28~ (2002)
- Proposed amendments to california exhaust, evaporative and refueling emission standards and test procedures for passenger cars, light-duty trucks and medium-duty vehicles LEV II, "Mobile source control division", CARB preliminary draft staff report, ~ (1998)
- B.C. Choi, "State of the art of the advanced after-treatment technology for zero emission gasoline vehicles", KSAE journal, 24(1), pp.20~ (2002)
- Duk-Sang Kim, "LDV Measurement, Flow Visualization and Numerical Analysis of Flow Distribution in a Close-Coupled Catalytic Converter", Journal of Mechanical Science and Technology, 18(11), pp.2032~2041 (2004), 대한기계학회
- Myung-Sik Choi, "The Study of HC Emission Characteristics and Combustion Stability with Spark Timing Retard at Cold Start in Gasoline Engine Vehicle", SAE paper No.2000-01-1082, ~
- Kyung-Hwan Lee, "Influence of Initial Combustion in SI Engine on Following Combustion Stage and Cycle-by-Cycle Variation in Combustion Process", International Journal of Automotive Technology, 2(1), pp.25~31 (2001)
- 함성훈, "가솔린기관의 냉시동시 촉매 가열 촉진 및 연소안정성 향상을 위한 최적제에 관한 실 험적 연구", 한국기계기술학술회지, 12(1), pp.63~70 (2010)