<abstract xmlns="http://www.w3.org/1999/xhtml"><p> There are uninvestigated areas connected with behaviour of elements in hydraulic systems with different structures. Unawareness of proportions of the energy, volumetric, pressure and mechanical losses in elements is often the case. Problems connected with energy efficiency are essential for improvement of functionality and quality of hydrostatic drive systems, characterised by unquestioned advantages but also by relatively low efficiency in comparison with other types of drive. Energy efficiency of hydrostatic transmissions, particularly those with throttling control of the motor speed, and also efficiency of the hydraulic servo-mechanism systems may be in fact higher than the values most often quoted in publications on the subject. Possibility of calculating the real value of the hydraulic system overall efficiency as a function of many parameters influencing it, becomes a tool of complete evaluation of the designed system quality. The paper compares efficiencies of systems with cylinder proportional control and efficiency of the system volumetric control by a variable capacity pump. Presented are also two schematic diagrams of the investigated hydrostatic systems, their principle of operation and problems of studying losses in elements and energy efficiency of systems consisting of a feed assembly, control set and cylinder.</p></abstract>

There are uninvestigated areas connected with behaviour of elements in hydraulic systems with different structures. Unawareness of proportions of the energy, volumetric, pressure and mechanical losses in elements is often the case. Problems connected with energy efficiency are essential for improvement of functionality and quality of hydrostatic drive systems, characterised by unquestioned advantages but also by relatively low efficiency in comparison with other types of drive. Energy efficiency of hydrostatic transmissions, particularly those with throttling control of the motor speed, and also efficiency of the hydraulic servo-mechanism systems may be in fact higher than the values most often quoted in publications on the subject. Possibility of calculating the real value of the hydraulic system overall efficiency as a function of many parameters influencing it, becomes a tool of complete evaluation of the designed system quality. The paper compares efficiencies of systems with cylinder proportional control and efficiency of the system volumetric control by a variable capacity pump. Presented are also two schematic diagrams of the investigated hydrostatic systems, their principle of operation and problems of studying losses in elements and energy efficiency of systems consisting of a feed assembly, control set and cylinder.

Energy efficiency of a hydrostatic drive with proportional control compared with volumetric control

Polish Maritime Research

There are uninvestigated areas connected with behaviour of elements in hydraulic systems with different structures. Unawareness of proportions of the energy,...

Energy efficiency of a hydrostatic drive with proportional control compared with volumetric control

Published Online: Oct 08, 2013

Page range: 14 - 19

DOI: https://doi.org/10.2478/pomr-2013-0030

Keywords
hydrostatic system, control structures, proportional directional valve, cylinder, energy losses, energy efficiency

This content is open access.

Energy efficiency of a hydrostatic drive with proportional control compared with volumetric control

Published Online: Oct 08, 2013

Page range: 14 - 19

DOI: https://doi.org/10.2478/pomr-2013-0030

Keywordshydrostatic system, control structures, proportional directional valve, cylinder, energy losses, energy efficiency

This content is open access.

Keywords
hydrostatic system, control structures, proportional directional valve, cylinder, energy losses, energy efficiency