Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Dynamic Analysis of Engine Valve Train with Flexible Multibody Model Considering Contact between Components

부품간의 접촉을 고려한 유연체모델을 이용한 엔진 밸브트레인의 동특성 해석

  • Hwang, Won-Gul (School of Mechanical Systems Engineering, Chonnam National University) ;
  • Sung, Won-Suk (Department of Rural & Bio-Systems Engineering, Chonnam National University) ;
  • Ahn, Ki-Won (Department of Automotive Engineering, Jeonnam Provincial College)
  • 황원걸 (전남대학교 기계시스템공학부) ;
  • 성원석 (전남대학교 지역-바이오시스템공학과) ;
  • 안기원 (전남도립대학 지동차공학과)
  • Received : 2010.04.28
  • Accepted : 2010.06.12
  • Published : 2011.01.01
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Abstract

The dynamic characteristics of valve train are responsible for the dynamic performances of engine. We derived the equation of motion for 6 degrees of freedom model of the valve train. Computer model is also developed with flexible multibody model considering contact between components. The simulation results with these two models are compared with experimental results. We investigated the effect of the two spring models, TSDA (Translational Spring Damper Actuator) element and flexible body model, on the valve behavior and spring force. It is found that the dynamic behavior of the two models are not very different at normal operational velocity of the engine. By modeling contact between cam and tappet, the stress distributions of the cam were found. Using stress distribution obtained, contact width and contact stresses of the cam surface were calculated with Hertz contact theory.

Keywords

References

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