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Effects of shifting time on pressure impact in hydraulic systems

  • Electro-Mechanical Engineering And Information Science
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Abstract

The limitations in existing measures for absorbing pressure impact in hydraulic systems were summarized in this paper. Based on the forming principle of the oil in a hydrostatic closed pressure chamber, the underlying reasons of the pressure impact were analyzed theoretically, the intrinsic laws that the extent of the pressure impact in hydraulic oil lines are affected by some factors, such as oil elastic modulus, oil line’s geometrical volume, and changing rate of oil volume versus time etc, were discussed. Experimental investigations into pressure impact in all pressure chambers because of shifting were conducted under different working conditions by employing a special experimental system. The effects of shifting time on pressure impact were studied. A new concept with universal meaning, i. e. optimal shifting time, and its characterizing parameter and the methods of shifting at optimal shifting time were also proposed. The results show that shifting time lag Δt is of rationality and maneuverability. The higher the working pressure, the shorter the shifting time.

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Authors and Affiliations

  1. School of Mechanical Engineering, China University of Mining and Technology, 221008, Xuzhou, China

    Zhu Zhen-cai (Professor) & Chen Guo-an

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  1. Zhu Zhen-cai
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  2. Chen Guo-an
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Correspondence to Zhu Zhen-cai.

Additional information

Foundation item: Project (2005-2) supported by New Century Excellent Talent Technological Project of Ministry of Education of China; project (2005-6) supported by the “Six Talent Peak” Project of Jiangsu Province

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Zhu, Zc., Chen, Ga. Effects of shifting time on pressure impact in hydraulic systems. J Cent. South Univ. Technol. 12 (Suppl 1), 217–221 (2005). https://doi.org/10.1007/s11771-005-0402-5

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  • DOI: https://doi.org/10.1007/s11771-005-0402-5

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