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Graphical presentation of the power of energy losses and power developed in the elements of hydrostatic drive and control system Part I Rotational hydraulic motor speed series throttling control systems

Abstract

Paper proposes and justifies a diagram of the direction of increase of power stream from the shaft or piston rod of a hydraulic motor to the pump shaft, power increasing as an effect of the imposed power of energy losses in the hydrostatic drive and control system elements. Graphical interpretation of the power of energy losses in the hydrostatic drive and control system elements and also of the power developed by those elements is presented. An individual system with the rotational hydraulic motor speed series throttling control fed by a constant capacity pump cooperating with an overflow valve in a constant pressure system p = cte ≈ pn is analyzed and also an individual system with the rotational hydraulic motor speed series throttling control fed by a constant capacity pump cooperating with an overflow valve controlled in a variable pressure system: p = var, an individual system with the rotational hydraulic motor speed series throttling control fed by a variable capacity pump cooperating with a pressure regulator in a constant pressure system p = cte ≈ pn and an individual system with the rotational hydraulic motor speed series throttling control fed by a variable capacity pump cooperating with the Load Sensing regulator in a variable pressure p = var system.

Keywords:

hydrostatic drive and control system, power of energy losses, energy efficiency

Details

Issue
Vol. 15 No. 3(57) (2008)
Section
Latest Articles
Published
18-11-2008
DOI:
https://doi.org/10.2478/v10012-007-0080-3
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Open Access License

This journal provides immediate open access to its content under the Creative Commons BY 4.0 license. Authors who publish with this journal retain all copyrights and agree to the terms of the CC BY 4.0 license.

 

Authors

Zygmunt Paszota

Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology

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