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Graphic method to evaluate power requirements of a hydraulic system using load-holding valves

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Berne, Luis Javier
Raush Alviach, Gustavo AdolfoMés informacióMés informacióMés informació
Roquet, Pedro
Gámez Montero, Pedro JavierMés informacióMés informacióMés informació
Codina Macià, EstebanMés informacióMés informacióMés informació
Document typeArticle
Defense date2022-07-01
Rights accessOpen Access
Attribution 4.0 International
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 4.0 International
Abstract
It is very well known that the use of a load-holding valve (LHV) in a hydraulic system introduces additional energy consumption. This article presented a simplified graphical method for analyzing the power requirements of hydraulic systems equipped with load-holding valves for overrunning load control. The method helps to understand the performance of load-holding valves during actuator movement. In addition, it allows visualization of the influence on the overall system consumption of the main parameters (pilot ratio, set pressure) and others such as flow rate, back pressure, and load force. The method is attractive because, with only the pressures at the three ports and the valve relief function curve, it is sufficient to evaluate the energy consumption and to define the power ratio as an index indicating the percentage of energy that is to be used to open the LHV valve. The method was applied to real cases, in particular to two types of lifting mobile machines. It Citation: Berne, L.J.; Raush, G.; Roquet, P.; Gamez-Montero, P.-J.; Codina, E. Graphic Method to Evaluate Power Requirements of a Hydraulic System Using Load-Holding Valves. Energies 2022, 15, 4558. https://doi.org/ 10.3390/en15134558 Academic Editors: Paolo Casoli and Massimo Rundo Received: 10 May 2022 Accepted: 16 June 2022 Published: 22 June 2022 Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). was validated following several outdoor tests on two mobile machines where experimental data were obtained. During tests, both machines were equipped with a set of seven different performance LHV valves. The described method could be beneficial for hydraulic machine manufacturers engaged in designing lifting devices when selecting a suitable valve for energy efficiency applications, especially nowthat the trend towards electrification is a reality
CitationBerne, L. [et al.]. Graphic method to evaluate power requirements of a hydraulic system using load-holding valves. "Energies", 1 Juliol 2022, vol. 15, núm. 13, article 4558. 
URIhttp://hdl.handle.net/2117/373649
DOI10.3390/en15134558
ISSN1996-1073
Publisher versionhttps://www.mdpi.com/1996-1073/15/13/4558
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  • LABSON - Laboratori de Sistemes Oleohidràulics i Pneumàtics - Articles de revista [37]
  • Departament de Mecànica de Fluids - Articles de revista [368]
  • IAFARG - Industrial and Aeronautical Fluid-dynamic Applications Research Group - Articles de revista [18]
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