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논문 상세정보

하이브리드용 가솔린 엔진에서 On/Off 방식 EGR적용 및 최적 EGR 율에 관한 연구

A Study on Application of On/Off Type EGR and Optimal EGR Rate for Gasoline-Hybrid Engine


EGR(exhaust gas recirculation) is an attractive means of improving the fuel economy of spark ignition engines, as it offers the benefits of charge dilution (lower pumping and cooling losses) while allowing stoichiometric fuelling to be retained for applications using the three-way catalysts. However, the occurrence of excessive cyclic variation with high EGR normally prevents substantial fuel economy improvements from being achieved in practice. Therefore, the optimum EGR rate in Gasoline-Hybrid engine should be carefully determined in order to achieve low fuel consumption and low exhaust emission. In this study, 2 liters gasoline engine with E-EGR system was used to investigate the effects of EGR on fuel economy, combustion stability, engine performance and exhaust emissions. EGR tolerance with load variation was found to be more sensitive than with rpm variation. With optimal EGR rates, the fuel consumption was improved by 5.5% while a combustion stability was guaranteed.

참고문헌 (9)

  1. S. M. Han and W. K. Cheng, "Design and Demonstration of a Spark Ignition Engine Operating in a Stratified-EGR Mode," SAE 980122, 1998 
  2. S. Diana, V. Giglio, B. Iorio and G. Police, "A Strategy to Improve the Efficiency of Stoichiometric Spark-ignition Engines," SAE 961953, 1996 
  3. R. S. G, Baert, D. E. Beckman and A. Veen, "EGR Technology For Lowest Emissions," TNO-Paper VM9607, 1996V 
  4. J. H. Son, H. Y. Kim, J. T. Chung, W. T. Kim and W. G. Lee, "The Flow and Mixing Characteristics of the Fresh Air and EGR Gas for Mixer Configurations at Downstream of Throttle Valve," Fall Conference Proceedings, KSAE, pp.134-140, 2004 
  5. C. S. Kim, J. H. Choi and B. K. Oh, "A Study for EGR Distribution of Gasoline Engine Using CFD," Fall Conference Proceedings, KSAE, pp.106-111, 2006 
  6. I. J. Berry and M. F. J. Brunt, "Improved Control of EGR during Speed/load Transients," SAE 960068, 1996 
  7. J. Przastek, A. Dabkowski and A. Teodorczyk, "The Study of Exhaust Gas Recirculation on Efficiency and NOx Emission in Spark-ignition Engine," SAE 1999-01-3514, 1999 
  8. G. R. Neame, D. P. Gardiner, R. W. Mallory, V. K. Rao, M. F. Bardon and V. Battista, "Improving the Fuel Economy of Stoichiometrically Fuelled S.I. Engines by Means of EGR and Enhanced Ignition A Comparison of Gasoline, Methanol and Natural Gas," SAE 952376, 1995 
  9. M. Tabata, T. Yamamoto and T. Fukube, "Improving NOx and Fuel Economy for Mixture Injected SI Engine with EGR," SAE 950684, 1995 

이 논문을 인용한 문헌 (2)

  1. Park, Cheol-Woong ; Choi, Young ; Kim, Chang-Gi 2009. "Analysis of Performance and Emissions Characteristics on Gasoline Engine for Hybrid Vehicles with Optimum EGR Rate and the Cylinder Variation of EGR Rate" 한국자동차공학회논문집 = Transactions of the Korean Society of Automotive Engineers, 17(1): 87~95 
  2. Yeom, Kyoung-Min ; Park, Sung-Young 2011. "Intake-Air Flow and Distribution Characteristics of the Gasoline Engine Intake-Manifold" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 12(11): 4718~4725 


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