A Novel Method to Quickly Acquire the Energy Efficiency for Piston Pumps

Gao, Mengdi; Huang, Haihong; Li, Xinyu; Liu, Zhifeng

doi:10.1115/1.4033840

Cited by 23 publications

(18 citation statements)

References 15 publications

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“…According to [6][7][8][9], energy losses can be classified into three groups in the axial piston pumps. The first group is volumetric losses caused by leakage flow losses, the losses in the second group are mechanical losses due to friction losses, and the third group is churning losses caused by the internal rotating components stirring the hydraulic fluid in axial piston pumps.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Zhang

et al. 2017

Energies

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Pressure and performance requirements of axial piston pumps and the proportion of churning losses in axial piston pumps increase significantly with increasing speed. To investigate the primary distribution of churning losses in axial piston pumps at various ranges of speed, a test rig was set up in which other friction losses can be eliminated, thus making it possible to investigate the net churning losses in an axial piston pump. The influence of the rotating cylinder block and pistons on churning losses is analyzed based on a qualitative evaluation of the various fluid flow regimes at different test speeds in an axial piston pump. The analytical results indicate that pistons have less influence on churning losses than the rotating cylinder block beyond the critical speed in axial piston pumps, because the total energy dissipation transforms laminar viscous friction losses into turbulent shear stress losses. It is concluded that more attention should be given to the effect of the rotating cylinder block on churning losses in axial piston pumps at high rotation speed.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Zhang

et al. 2017

Energies

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“…There is also a flow meter (5) in the output line of the unit. The piston rod of the unit ( 1) is connected via a force sensor (6) to the piston rod of the drive actuator (7), which is additionally equipped with a position sensor (8).…”

Section: Total Eflciencymentioning

confidence: 99%

“…The correct kinematic analysis of the system is important as it has a significant impact on the mathematical model. The models that can be found in literature are developed in order to understand what effect the loss components have on the overall efficiency, and to estimate the pump characteristics [8][9][10]. The models are also used to analyze the entire system with hydrostatic transmission in an attempt to compare the characteristics of hydrostatic transmission working in closed loop or open loop hydraulic circuit [11].…”

Section: Introductionmentioning

confidence: 99%

Energy analysis of a real suction-pressure unit

Myszkowski

Staniek

Zieliński

2020

Mechanics and Mechanical Engineering

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The article presents an energy analysis of a real suction-pressure unit of a high-efficiency radial piston pump. This pump can be used in small hydropower plants, where, together with a variable displacement hydraulic motor, it would form a hydrostatic transmission. The main advantage of this solution is the possibility of a stepless, automatic change of gear ratio during its operation, which allows an increase of the efficiency of power generation in a hydropower plant. Mathematical models of friction and resistance of flow through self-acting and geometrical deformations of chambers and piston under stress field are presented. In addition, mass, volume, and energy balance calculations were computed for the ideal unit and pressure losses were determined. Derived indicator diagrams for each chamber of the ideal suction-pressure unit served to analyze the technical work of occurring processes. The paper also presents the formulation of total efficiency of the unit. Lastly, the experimental procedure is presented, according to which it is possible to register the most important parameters of the proposed model.

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“…According to the characteristic features of energy conversions within the hydraulic press in working processes, the energy consumption could be decomposed into six energy elements as shown in Table 4, which are performed by their corresponding components, as shown in Figure 7. Moreover, based on the energy dissipation features of the components, the energy consumption models of the main energy conversion components or units have been established, such as the motors and pumps [24,25], which means the energy characteristics of energy elements were quantified. Different from the characterized classification of six energy consumption elements, another classification was proposed by Li et al [7,[27][28][29].…”

Section: Energy Monitoring and Modeling For Metal Forming Equipmentmentioning

confidence: 99%

A Review on Energy Consumption, Energy Efficiency and Energy Saving of Metal Forming Processes from Different Hierarchies

Gao

et al. 2019

Processes

Self Cite

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Energy efficiency improvement and environmental impact reduction are emerging issues in the manufacturing industry. Aside from cutting, metal forming is also an important process in manufacturing. Metal forming is energy intensive because of the low energy efficiency of the used metal forming press. Although many literature reviews focused on the energy reduction and energy efficiency of machine tools, a comprehensive literature review of metal forming processes remains lacking because of the great difference between cutting machines and forming equipment. In addition, methods for energy efficiency and energy-saving still need to be promoted in metal forming. In this review, a novel hierarchy of the metal forming system was presented to describe the relationship among the equipment, process, and manufacturing system, providing a guideline of methods for energy efficiency and saving in metal forming. Then, existing energy consumption modeling and estimation theories and methods were discussed from two aspects. One is energy monitoring and modeling of metal forming equipment, and the other is process energy analysis of metal forming based on different parameters. On the basis of the hierarchy of the metal forming system, the present methods and technologies aiming to promote energy efficiency and energy saving effects were discussed from the aspects of equipment design and control, process optimization, and scheduling management and use. Thus, this review may serve as a reference for the decision-making of producers and managers to realize energy efficiency and energy saving at the system level. In addition, the major points that need attention are accurate energy models and control of forming equipment as well as the integrated optimization of equipment, process, and scheduling.

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A Novel Method to Quickly Acquire the Energy Efficiency for Piston Pumps

Cited by 23 publications

References 15 publications

Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Energy analysis of a real suction-pressure unit

A Review on Energy Consumption, Energy Efficiency and Energy Saving of Metal Forming Processes from Different Hierarchies

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