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Analysis of Abnormal Vibration by a Damper Clutch Operation in Low Speed Ranges of A/T Vehicles

A/T차량의 저속 영역에서 댐퍼클러치 작동에 따른 이상 진동 해석

  • Shin, Changwoo (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Beomsoo (Performance and Drivability Development Team, Hyundai Motor Company) ;
  • Lee, Daeheung (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Jeong, Jongryeol (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Lim, Wonsik (Department of Automotive Engineering, Seoul National University of Science and Technology) ;
  • Cha, Sukwon (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 신창우 (서울대학교 기계항공공학부) ;
  • 김범수 (현대자동차 동력개발팀) ;
  • 이대흥 (서울대학교 기계항공공학부) ;
  • 정종렬 (서울대학교 기계항공공학부) ;
  • 임원식 (서울과학기술대학교 자동차공학과) ;
  • 차석원 (서울대학교 기계항공공학부)
  • Received : 2012.10.05
  • Accepted : 2012.11.09
  • Published : 2013.05.01

Abstract

A damper clutch in automatic transmission systems has some advantages of fuel economy and dynamic performance. Although a damper clutch operation improves a fuel economy of the vehicles, a positive operation of a damper clutch in a low vehicle speed induces abnormal vibration. This paper analyzed one of reasons for abnormal vibration by a damper clutch operation in low engine speed ranges. A simulation model was designed to confirm the effects of a damper clutch operation under unstable regions of an engine. A theoretical analysis was carried out about an engine operation stability. Simulation was conducted to depict abnormal vibration by a damper clutch operation in unstable regions of an engine performance curve. The effects of an engine operation region for abnormal vibration by a damper clutch was investigated according to the range and the slope of unstable regions. As a result of simulations, a damper clutch operation would be better to avoid an engine unstable regions.

Keywords

References

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