한국기계기술학회지 (Journal of the Korean Society of Mechanical Technology)

  • 제13권4호
  • /
  • Pages.85-91
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  • 2011
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  • 1229-604X(pISSN)
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  • 2508-3805(eISSN)
한국기계기술학회 (Korean Society of Mechanical Technology)
권호 표지

특장차량 유압시스템 내 열적 특성 분석

Experimental Thermal Analysis of Hydraulic System in a Special Vehicle

  • 최유현 (원광대학교 기계자동차공학부 대학원) ;
  • 이상호 (원광대학교 기계자동차공학부)
  • 투고 : 2011.11.18
  • 심사 : 2011.12.23
  • 발행 : 2011.12.31
⟨ 이전 논문 다음 논문 ⟩

초록

Experimental analysis has been carried out to investigate thermal characteristics of hydraulic system in special vehicles. Hydraulic system performance is largely influenced by oil temperature, and there are considerable performance decline and malfunctions in the system for high temperature conditions caused by heavy load and continuous operation. Transient oil temperature and pressure variation are analyzed and heat generation rates in the several main system parts are compared for various flow rates. With the start of system operation oil temperature gradually increases, and viscosity deceases by about 70% as temperature increases from $20^{\circ}C$ to $80^{\circ}C$. Operation pressure in the hydraulic system decreases with oil temperature, and its variation rate becomes less steep as oil temperature increases. Heat generation rate in hydraulic pump also depends on the oil temperature, and it reaches maximum near $50^{\circ}C$. These results in this study can be applied to optimal design of efficient hydraulic system in special vehicles.

키워드

과제정보

연구 과제 주관 기관 : 원광대학교

참고문헌

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