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자동차 능동 현가장치 유압계 회귀 관로에서의 서지 압력 저감법
정용길(Y. G. Jung),이일영(I. Y. Lee),윤영환(Y. H. Yoon) 한국자동차공학회 1998 한국 자동차공학회논문집 Vol.6 No.5
Surge pressure problem at the oil return line of the hydraulic circuit of an active suspen-sion system for passenger cars was investigated by experiments and numerical analyses. In the numerical analyses, the method of characteristics was used for simulating unsteady flow in the hydraulic system and gas discrete model was adopted for estimating gas volume vari-ation in separated liquid column. In the experiment, a piston type accumulator was used for the purpose of smoothing surge pressure. By the experiments and analyses, effects of the physical parameters of the accumulator on smoothing surge pressure was elucidated.<br/>