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TECHNICAL PAPERS

Prediction and Improvement of Steady-State Performance of a Power Controlled Axial Piston Pump

[+] Author and Article Information
Osama Gad

Mechanical Engineering Department, College of Engineering and Petroleum, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait

M. Galal Rabie

Aeronautical Department, Military Technical College, Cairo, Egypt

Refaat M. El-Taher

Mechanical Power Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt

J. Dyn. Sys., Meas., Control 124(3), 443-451 (Jul 23, 2002) (9 pages) doi:10.1115/1.1485096 History: Received July 01, 2001; Online July 23, 2002
Copyright © 2002 by ASME
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References

Gad, O. E., Rabie, M. G., and El-Taher, R. M., 1999, “Experimental and Theoretical Study of the Static and Dynamic Behavior of a Variable-Displacement Pump with Power Control,” Proceedings of the 8th ASAT Conference, 4–6 May, Paper FP-03, PP 619–641.
Manring,  N. D., 1998, “The Torque on the Input Shaft of an Axial-Piston Swash-Plate Type Hydrostatic Pump,” ASME J. Dyn. Syst., Meas., Control, 120, pp. 57–62.
Manring,  N. D., and Johnson,  R. E., 1996, “Modeling and Designing a Variable-Displacement Open-Loop Pump,” ASME J. Dyn. Syst., Meas., Control, 120, pp. 57–62.
Kaliafetis,  P., and Costopoulos,  T. H., 1995, “Modeling and Simulation of an Axial Piston Variable Displacement Pump with Pressure Control,” Mech. Mach. Theory, 30(4), pp. 599–612.
Kiyoshi,  I., and Masakasu,  N., 1994, “Study of the operating Moment of a Swash Plate Type Axial Piston Pump: First Report,” Journal of Fluid Control, 22, Issue 1, pp. 7–29.
Edge, K., and Darling, J., 1989, “Cylinder Pressure Transient In Oil Hydraulic Pumps With Sliding Plate Valves” Proceedings, 2nd Int. Conference on Fluid Power Transmission And Control, Hangzhou, China, pp. 250–256.
Edge,  K. A., and Darling,  J., 1989, “The Pumping Dynamics of Swash Plate Piston Pumps,” ASME J. Dyn. Syst., Meas., Control, 111, June, pp. 307–312.
Gad, O. E., 1997, “An Investigation Into the Static and Dynamic Performance of a Class of Variable Displacement Axial Piston Pump with Power controller,” Ph.D. thesis, Faculty of Engineering, Zagazig University, Zagazig, Egypt.
Mirels,  H., 1994, “Effect of Orifice flow and Heat Transfer on Gas Spring Hysteresis,” AIAA J., 32(8), Aug. pp. 1656–1661.
Kornhauser,  A. A., and Smith,  J. L., 1993, “Effect of Heat Transfer on the Gas Spring Performance,” ASME J. Energy Resour. Technol., 115(1), Mar., pp. 70–75.

Figures

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Axial piston pump (bent axis design)
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Schematic diagram of the pumping mechanism and port plate
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Schematic diagram of the pump equipped with the original controller
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The hydraulic circuit of the test stand
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Experimental and theoretical results of the steady-state characteristics of the pump for several values of the speed N
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Experimental and theoretical results of the steady-state characteristics of the pump for several values of the adjustment spring presetting
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Experimental and theoretical results of the transient variation of the pump supply pressure P
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Experimental and theoretical results of the transient variation of the pressure P1
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Experimental and theoretical results of the transient variation of the pump supply pressure P to rapid reduction of the pump exit line resistance (opening the DCV)
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Schematic diagram of the pump equipped with the proposed controller
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Effect of variation of the accumulator size V0 on the steady state characteristic
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Effect of variation of the accumulator size V0 on the transient response of the accumulator working pressure Pa
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Effect of variation of the exponent n on the steady- state characteristics of the pump
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Comparison between the original and proposed steady-state characteristics of the studied pump
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Comparison between the original and proposed transient variation of the pump supply pressure P

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