한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제17권5호
  • /
  • Pages.7-15
  • /
  • 2009
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

2차 캠 중심 이동형 연속가변밸브 구동기구의 기구학 해석

Kinematic Analysis of a Continuously Variable Valve Actuation Mechanism with Movable Second Cam Center

  • 김도중 (울산대학교 기계자동차공학부) ;
  • 김용현 (울산대학교 자동차선박기술대학원)
  • Kim, Do-Joong (Department of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Kim, Yong-Hyun (Institute of e-Vehicle Technology, University of Ulsan)
  • 발행 : 2009.09.01
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초록

This paper introduces a new variable valve actuation mechanism with movable second cam center. Valve lift and open duration can be continuously varied according to engine speed and load conditions. A new method to analyze the kinematic relations between the first and second cam profiles and valve motion are also introduced. Because of rocker motion of the second cam, conventional motion conversion program could not be used in this problem. An example shows continuous variations of valve motion and adequate ramp incorporation throughout all valve lift modes. Valve acceleration profile at the high lift mode is similar to that of conventional valvetrains. Contact geometry analysis of the mechanism gives basic information on the load conditions between the components.

키워드

참고문헌

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