Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Mechanical Loss Model for a Metal Belt CVT

금속벨트 CVT 동력전달 손실모델

  • Ryu, Wan-Sik (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Pil-Gu (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Hyun-Soo (School of Mechanical Engineering, Sungkyunkwan University)
  • 류완식 (성균관대학교 기계공학부) ;
  • 김필구 (성균관대학교 기계공학부) ;
  • 김현수 (성균관대학교 기계공학부)
  • Published : 2006.05.01
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Abstract

In this paper, the belt-pulley mechanical loss is investigated. A bondgraph model for the mechanical loss is developed from the viewpoint of the power flow by assuming that all power losses are attributed to the torque loss. The mechanical loss model consists of transient and steady state part. The coefficients of the power loss model are obtained from the experiments. It is found from the simulations and experiments that the steady state loss depends on the line pressure, input torque and rotational speed while the transient loss depends on the rotational speed, shift speed and the inertial torque.

Keywords

References

  1. H. Sattler, 'Efficiency of Metal Chain and V-Belt CVT,' Proc. of the International Congress on Continuously Variable Power Transmission, pp.99-104, 1999
  2. T. Ide, 'Effect of Power Losses of Metal V-Belt CVT Components on the Fuel Economy,' Proc. of the International Congress on Continuously Variable Power Transmission, pp.93-98, 1999
  3. B. G. Vreomen, 'Component Control for the Zero Inertia Powertrain,' Ph. D. Dissertation, Eindhoven University, 2001
  4. H. Song, H. Lee, H. Kim, 'CVT Power Transmitting Characteristics and Control Logics for Negative Torque,' Transactions of KSAE, Vol.10, No.1, pp.225-264, 2002
  5. H. Lee, H. Kim, 'Shift Speed Improvement of a Metal Belt CVT,' KSME International Journal, Vol.15, No.12, pp.1623-1629, 2001