한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제4권6호
  • /
  • Pages.97-108
  • /
  • 1996
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

유압식 밸브 간극 조정장치를 가진 중심지지 로커암형 OHC 밸브기구의 동특성에 관한 연구

A Study on the Dynamic Characteristics of Center Pivot Rocker Arm Type OHC Valve Trains with Hydraulic Lash Adjuster

  • 발행 : 1996.12.01
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초록

A modeling technique is proposed for dynamic simulations of OHC valve trains with HLA(hydraulic lash adiuster). HLA is expressed by an air-oil mixture model considering HLA leak-down and aeraton effects. A compact nonlinear equation is derived which describe the short term dynamic behavior of the HLA. Valve spring is analyzed by a distributed parameter model including nonlinear characteristics in the spring surge phenomena. Global behavior of the remaining valve train is expressed by a lumped mass model. The experiental results prove that the simulation model developed here is accurate and useful for the dynamic simulations of OHC valve trains with HLA.

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참고문헌

  1. SAE paper 911061 Improvement of DOHC valve train noise by analysis of valve and tappet movement E. Kamiyama;S. Yasugara
  2. SAE paper 870086 Influence of hydraulic valve lash adjusters on the dynamic behavior of valve trains P. Kreuter;G. Mass
  3. SAE paper 890620 Valve train dynamics-a computer study S. Seildlitz
  4. KSME Jounal v.4 no.1 Analytical and experimental motion analysis of finger follower type cam-valve system with a gydraulic tappet W. J. Kim;H. S. Jeon;Y. S. Park
  5. ASME J. of mechanisms, transmissions and automation in design v.108 The development of a predictive model for the optimization of high-speed cam-follower systems with Coulomb damping internalfriction and elastic and fluidic elements S. Hanachi;F. Freudenstein
  6. SAE paper 890619 An efficient model for valvetrain and spring dynamics P. J. Phlips;A. R. Schamel;J. Meyer
  7. SAE paper 910071 The dynamics of valvetrains with hydraulic lash adjusters and the interaction with the gas exchange process P. Phips;A. Schamel
  8. SAE paper 930997 A numerical and experimental study of the effect of aeration of oil on valve trains equipped with gydraulic lash adjusters P. Porot;J. Trapy
  9. AC Rochester Division of General Motors, Engineering Report No. R501 Mathematical Development of Hydraulic Lifter Leakdown Equations C. Kaswer;C. Deminco
  10. 울산대학교 기계공학과 공학석사학위 논문 OHV형 밸브트레인의 동특성 해석 및 최적 캠 형상 설계에 관한 연구 윤수환
  11. IMSL Inc Math/library : Frotran subroutines for mathematical applications IMSL