Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Design Parameter Analysis of the Proportional Control Valve for Wheel-Loader Automatic Transmission

휠로더 자동변속기용 비례 제어 밸브의 설계 특성 해석

  • Park, Young-Jun (System Engineering Research Division, KIMM) ;
  • O, Joo-Young (Department of Mechanical design & Mechatronics Engineering, Hanyang Univ.) ;
  • Yun, Ung-Kwon (System Engineering Research Division, KIMM) ;
  • Lee, Guen-Ho (System Engineering Research Division, KIMM)
  • 박영준 (한국기계연구원 시스템엔지니어링 연구본부 시스템신뢰성연구실) ;
  • 오주영 (한양대학교 기계설계.메카트로닉스공학과) ;
  • 윤웅권 (한국기계연구원 시스템엔지니어링 연구본부 시스템신뢰성연구실) ;
  • 이근호 (한국기계연구원 시스템엔지니어링 연구본부 시스템신뢰성연구실)
  • Received : 2009.04.22
  • Accepted : 2010.02.19
  • Published : 2010.05.01
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Abstract

A loader used for uploading materials into truck is a kind of construction equipment. Mainly, a wheel loader is applied to construction work. Recently, an automatic transmission for the wheel loader is used to help drivers get the repetitive works done comfortably. It is composed of geartrain, clutch pack, hydraulic control system and TCU. Especially, a high-performance proportional control valve and its control algorithm is demanded to achieve the shift quality during a change of speed. In this paper, the commercial package program was used in order to justify model of the proportional control valve and simulate it. Steady-state and dynamic characteristics of PCV were analyzed to classify attractive forces and hydraulic control characteristics. This model also was verified the validity compared to the experimental result. Using the developed model, performances of PCV were predicted as studying design parameters.

Keywords

References

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