CSIR-Central Mechanical Engineering Research Institute, Durgapur, India
For a spool type directional control valve, direction of the oil flow is determined by the relative position of spool with respect to sleeve holes. A spool type 4 way 3 position directional control valve was developed and tested after putting it in tractor hydraulic system and field trial was taken successfully. This paper reports for the design of the stated valve using different design tools like 3D CAD, CAM and subsequently it was also analyzed using CFD for performance evaluation before testing it in an actual system to verify different aspects of a product, such as manufacturability, weight and cost and functional aspects. The components for this valve thus designed can be easily manufactured in a simple machine shop without need of any special arrangement or machines which ultimately gives a low cost product for application in tractor hydraulic system.
Spool, valve, 3D CAD, CFD, hydraulics
