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A Performance Prediction Method for Axial Piston Pumps of the Swashplate Type
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English
Abstract
A system for transmitting power to the wheels of a ground vehicle must be able to meet all the possible torque and speed requirements likely to be encountered in normal use The hydrostatic system offers a stepless transmission of power with a high response rate, and can cater for a wide range of torque and speed combinations. However, because of its low efficiency, rarely greater than 80%, the use of the hydrostatic system tends to be restricted to specialist applications. The paper describes the various loss models for the axial piston pump of the swashplate type which is used widely in modern hydrostatic systems. These models have been incorporated in a performance prediction method that could help to minimise the losses at the design stage. The predicted and measured performance data from a pump of modern design have been compared. The method may be applied also, with small modifications, to axial piston motors of similar design.
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Authors
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Citation
Beswarick, W. and Bhinder, F., "A Performance Prediction Method for Axial Piston Pumps of the Swashplate Type," SAE Technical Paper 821090, 1982, https://doi.org/10.4271/821090.Also In
References
- Thoma J. “Performance of hydrostatic units” Hydraulic Power Transmission August 1962 January 1963
- Beswarick W.J. “A design and performance prediction method for axial piston pumps with integral controls” (C.N.A.A.) The Hatfield Polytechnic 1979
- Nau B. S. “Design, performance and testing of valve plates for axial piston pumps and motors” Fluid Power International Conference London 1972
- Bangs E. “Axial piston pumps with angled swashplate” Aachen, Germany 1965