Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Evaluation of Fuel Economy and Performance for 2WD and 4WD Hybrid Electric Vehicle Based on Backward Simulation

2륜 및 4륜 구동 하이브리드 전기 자동차의 후방향 시뮬레이션 기반 연비 및 성능 평가

  • Jeong, Jongryeol (School of Mechanical & Aerospace Engineering, Seoul National University) ;
  • Kim, Hyungkyoon (School of Mechanical & Aerospace Engineering, Seoul National University) ;
  • Kim, Kiyoung (School of Mechanical & Aerospace Engineering, Seoul National University) ;
  • Lim, Wonsik (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Cha, Suk Won (School of Mechanical & Aerospace Engineering, Seoul National University)
  • 정종렬 (서울대학교 기계항공공학부) ;
  • 김형균 (서울대학교 기계항공공학부) ;
  • 김기영 (서울대학교 기계항공공학부) ;
  • 임원식 (서울과학기술대학교 기계자동차공학과) ;
  • 차석원 (서울대학교 기계항공공학부)
  • Received : 2013.07.01
  • Accepted : 2013.08.07
  • Published : 2014.01.01
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Abstract

Recently, not only common types of hybrid electric vehicle (HEV) such as series or parallel but many other types of HEVs including 4WD hybrid electric vehicle have been developed and released. In this study, analysis of fuel economy and driving performance for 2WD and 4WD HEV are conducted using backward simulation based on dynamic programming. To analyze the characteristics of 4WD HEV, tire slip model based on vehicle dynamics was applied to the backward simulation program. As a result, 2WD HEV shows better fuel economy than 4WD HEV because of relatively simple configuration. However, in a severe road condition, 4WD HEV shows better driving performance that 2WD HEV had about 6% of impossible time to follow the driving cycle though the 4WD HEV had no impossible time.

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References

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