TY - JOUR TI - Analysis of switching time for pilot operated directional control valve AU - Rajda, Janusz AU - Lisowski, Edward TI - Analysis of switching time for pilot operated directional control valve AB - The paper presents an analysis of switching time for pilot operated directional control valve [1–3] in a typical hydraulic system, in which the actuator is a hydraulic cylinder. A mathematical model has been built which contains equations of motion for the valve and actuator components, the balance of fluid flow, flow through the gap, and the principle of conservation of momentum and the flow curves of pressure relief valves [6, 8]. The system of equations is solved by fourthorder Runge-Kutta method. A survey to find minimal switching time has been conducted [4]. Positive overlap value, the coefficient of its movement resistance and control pressure value have significant impact on the switching time in the tested valve. VL - 2013 IS - Mechanika Zeszyt 1-M (5) 2013 PY - 2014 SN - 0011-4561 C1 - 2353-737X SP - 341 EP - 348 DO - 10.4467/2353737XCT.14.043.1969 UR - https://ejournals.eu/czasopismo/czasopismo-techniczne/artykul/analysis-of-switching-time-for-pilot-operated-directional-control-valve KW - modeling of hydraulic systems KW - spool type directional control valve