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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 9    No. 1    March 1999

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THEORY AND APPLICATION OFπBRIDGE HYDRAULIC RESISTANCE NETWORKS①
Hu Yanping, Wei Jianhua*, Guo Yingfu, Wu Genmao*and Liu Deshun

1.Department of Mechanical Engineering, Xiangtan Polytechnic University,Xiangtan 411201, P. R. China
*2. Zhejiang University, Hangzhou 310027, P. R. China

Abstract:Pressure flow properties of seven basicπbridge hydraulic resistance networks are studied and the pressure flow characteristic curves are obtained by simulation, while the pressure gain and flow gain ofπ bridge are deduced. Half bridge hydraulic resistance is only a special case ofπbridge network. The pressure control valve with theπbridge pilot control circuit has some pressure flow properties that the valve with half bridge pilot control circuit dosen’t have. For example, with the increasing of the overflow, the relief valve presents three kinds of performances, i.e. the control pressure increases, keeps constant and drops when the hydraulic resistance parameters inπbridge pilot circuit changes.

 

Key words: hydraulic resistance network theory application

ISSN 1672-7029
CN 43-1423/U

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