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Basic Characteristics of a Two Stage Directional Control Valve with Pilot Spool Assembled in Main Spool Coaxially  

Lee, I.Y. (부경대학교 기계자동차공학과)
Son, J.M. (부경대학교 대학원)
Publication Information
Journal of Power System Engineering / v.14, no.6, 2010 , pp. 102-108 More about this Journal
Abstract
In this study, the authors investigate the basic characteristics of a two stage directional control valve with pilot spool assembled in main spool coaxially. The step response characteristics and effects of major design parameters' values on valve performances arc clarified through numerical simulations. In addition, the authors examined the possibility of applying the object valve for this study as a proportional control valve. Based on the numerical simulation results, new design values for the reformed design as a proportional control valve were suggested.
Keywords
Two Stage Hydraulic Valve; Main Spool; Pilot Spool; Valve Design;
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  • Reference
1 ISO 10770-1, 1998, "Hydraulic Fluid Power - Electrically modulated hydraulic control valves - Part 1 : Test methods for four- way directional flow control valves"
2 www.bucherhydraulics.com/.../WDV-W, EV-WOF
3 www.nireco.jp/prod/process/pg2.html
4 LMS IMAGINE S. A., 2008, "AMESim Library Manual"