A cylinder has to exert a forward thrust of 100 kN and a reverse thrust of...
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A cylinder has to exert a forward thrust of 100 kN and a reverse thrust of 10 kN. The effects of using various methods of regulating the extend speed will be considered. In all the cases, the retract speed should be approximately 5 m/min utilizing full pump flow. Assume that the maximum pump pressure is 160 bar and the pressure drops over the following components and their associated pipe work (where they are used): Filter = 3 bar Directional control valve (DCV) = 2 bar Flow-control valve (controlled flow) = 10 bar Flow-control valve (check valve) = 3 bar Determine the following: (a) The cylinder size (assume the piston-to-rod area ratio to be 2:1). (b) Pump size. (c) Circuit efficiency when using the following: Case 1: No flow controls (calculate the extend speed). Case 2: Meter-in flow control for extend speed 0.5 m/min. Case 3: Meter-out flow control for extend speed 0.05 m/min. A cylinder has to exert a forward thrust of 100 kN and a reverse thrust of 10 kN. The effects of using various methods of regulating the extend speed will be considered. In all the cases, the retract speed should be approximately 5 m/min utilizing full pump flow. Assume that the maximum pump pressure is 160 bar and the pressure drops over the following components and their associated pipe work (where they are used): Filter = 3 bar Directional control valve (DCV) = 2 bar Flow-control valve (controlled flow) = 10 bar Flow-control valve (check valve) = 3 bar Determine the following: (a) The cylinder size (assume the piston-to-rod area ratio to be 2:1). (b) Pump size. (c) Circuit efficiency when using the following: Case 1: No flow controls (calculate the extend speed). Case 2: Meter-in flow control for extend speed 0.5 m/min. Case 3: Meter-out flow control for extend speed 0.05 m/min.
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Answer rating: 100% (QA)
Case 1 No flow controls Solution for a Maximum available pressure at the full bore end of cylinder16032 155 bar Back pressure at the annulus side of c... View the full answer
Related Book For
Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
Posted Date:
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