(PDF) Energy-Efficiency Improvement and Processing
This paper proposes an energy-saving system based on a prefill system and a buffer system to improve the energy efficiency and the processing performance of hydraulic presses. Saving energy by
Energy saving method of hydraulic accumulator
As the boom of a hydraulic excavator drops, the potential energy accumulated during the lifting process is converted into thermal energy and dissipated through the throttling action of the hydraulic valve, leading to excessive fuel consumption and serious energy waste.
6 Frequently Asked Questions about “Energy saving method of hydraulic accumulator”
Can a hydraulic accumulator save energy?
In this study, a novel energy saving hydraulic system is proposed and investigated. The system is a pump controlled hydraulic system developed for the cylinder actuator. The proposed system has advanced characteristics in both energy saving and high specific power by using a hydraulic accumulator.
What is a hydraulic excavator energy saving system?
In order to address these issues, a hydraulic excavator energy saving system based on a three-chamber accumulator is proposed. Firstly, the conventional piston-type hydraulic accumulator is integrated with the hydraulic cylinder to form a three-chamber accumulator, which has a pressurizing function during energy storage.
How a new ERS combines electric and hydraulic accumulator?
At first, the structure of new ERS that combines the advantages of an electric and hydraulic accumulator is analyzed. The energy can be converted into both the electric energy and the hydraulic energy at the lowering of the boom and the generator can still works when the boom stops going down.
Can a hydraulic excavator save energy?
Then, a hydraulic excavator energy saving system based on three-chamber accumulator is proposed, which can store and reuse the energy loss from throttling and overflow of the hydraulic system without changing the hydraulic system of the excavator.
Can energy-saving system be applied to other hydraulic equipment with dynamic changes?
The energy-saving system presented in this study can recover and reuse potential energy based on the hydraulic circuit illustrated in Fig. 3. Therefore, this system can also be applied to other hydraulic equipment with dynamic changes in potential energy within the working mechanism.
Can a hydraulic accumulator work if the boom stops going down?
The energy can be converted into both the electric energy and the hydraulic energy at the lowering of the boom and the generator can still works when the boom stops going down. Then, a method how to set the working pressure of the hydraulic accumulator is proposed.
Review of boom potential energy regeneration technology for hydraulic
Also, a method to set the hydraulic accumulator pressure is provided . To avoid the excess energy loss and pressure impact, a method with two-level pressure threshold to feature the work pattern of the generator is proposed. Sun W, Virvalo T. Simulation study on a hydraulic-accumulator-balancing energy-saving system in hydraulic Boom
Hydraulic accumulator-motor-generator energy regeneration
At first, the structure of new ERS that combines the advantages of an electric and hydraulic accumulator is analyzed. The energy can be converted into both the electric
Experimental Results on an Energy Saving Method Applied to a Hydraulic
The paper is focused on the experimental results regarding the operation of a new energy recovery system. The system is used to electrohydraulic driven a lifting system. The energy recovery method is based on the use of a hydraulic power multiplier cylinder and an accumulator. Three working scenarios are presented and the performance of the system for each operating
Energy‐Saving Analysis of Hydraulic Hybrid Excavator Based on
Energy-saving research of excavators is becoming one hot topic due to the increasing energy crisis and environmental deterioration recently. Hydraulic hybrid excavator based on common pressure rail (HHEC) provides an alternative with electric hybrid excavator because it has high power density and environment friendly and easy to modify based on the existing manufacture
Energy-Saving for a Velocity Control System of a Pipe
the RL algorithm. The energy supply ratio of hydraulic pump and accumulator was optimized to conserve energy. Compared with previous research results, this method has a signicant improvement in energy eciency and is more suitable for engineering practice. 2 Energy‑Saving System Model of PIT 2.1 PIT System with Energy‑Saving Description
Energy efficiency improvement of heavy-load hydraulic fine
The fine blanking process has the highest forming accuracy in the field of metal forming and its production volume has increased sharply. However, hydraulic fine blanking presses (HFBP) – the core equipment of the fine blanking process, have suffered from significant energy loss due to the inefficient hydraulic system. To enhance the energy efficiency of the
Research on Parameter Optimization Matching of Slewing
After optimization, the energy-saving system''s energy-saving efficiency increased to 46.6% compared to the conventional system, marking a 6.3% increase in energy-saving efficiency relative to the pre-optimization state. The effectiveness of the slewing energy-saving system and the proposed matching algorithm is verified.
Energy Saving Implementation in Hydraulic Press Using
With the growing cost of electrical energy, the necessity of energy-saving implementation in industries based on energy audits has become a major focus area. Energy audit results indicate energy-saving potential in an application and require the physical presence of the auditor''s team for monitoring and analyzing the energy consumption data. The use of
(PDF) Hydraulic Energy Saving System: Modeling and
Triet H.H. Et.al have been developed A novel energy-saving hydraulic system based on an HST/hydraulic accumulator combination was investigated through analysis and modeling. The system improves the efficiency of the primary
Experimental Results on an Energy Saving Method Applied to a
The paper is focused on the experimental results regarding the operation of a new energy recovery system. The system is used to electrohydraulic driven a liftin.
Energy-Saving Design Method for Hydraulic Press Drive System
Large energy consumption caused by the pump unloading, as well as the low energy efficiency of the motor, is a serious problem for hydraulic presses especially for the press with multi motor-pumps. By analyzing the energy dissipation characteristic of hydraulic press drive system which is composed of several motor-pumps used to provide energy, an energy-saving
Development and Evaluation of Energy-Saving Electro
In this study, a novel energy saving hydraulic system is proposed and investigated. The system is a pump controlled hydraulic system developed for the cylinder actuator. The proposed system has advanced
Hydraulic accumulators in energy efficient circuits
A) Inline accumulators in a hybrid automobile transmission [reproduced from Costa and Sepehri (2015)] and (B) secondary accumulator circuit in a wind generator [reproduced from Dutta et al. (2014)].
Energy-saving Methods for Hydraulic Presses Based on Energy
In order to reduce carbon intensity and improve the energy efficiency, the overall carbon emissions of hydraulic presses was firstly analyzed. For a series of intermediate energy
Output feedback control for energy-saving asymmetric hydraulic servo
In contrast to other driving methods, hydraulic servo system has unique advantages such as large torque/force output and high-power density. It is widely used in industrial applications including digging robots , hydraulic press , equipment performance tests and load simulation and so on. Thus far, the improvement of the energy efficiency
Energy saving and performance enhancement of hydraulic
In this study, a novel double-stage hydraulic system incorporating a hydraulic controllable accumulator (HCA) was proposed to simultaneously improve the energy and
Application of Hydraulic Energy-Saving Technology in
To cope with the current resource, energy, and environmental problems faced by the manufacturing industry, energy conservation has become a long-term national development strategic policy. Specifically, the problems of
Energy-saving starting method of electric motor based on the
The series electro-hydraulic hybrid powertrain has advantages in improving the dynamic characteristics and increasing the cruising range of battery rail vehicles. In order to reduce the large peak starting current of electric motor, an energy-saving starting method is proposed, which is using the hydraulic pump/motor to reversely drive the electric motor to
Energy improvement of fineblanking press by valve-pump
Energy-saving methods for hydraulic presses based on energy dissipation analysis. Proc. CIRP. Potential energy regeneration is an important hydraulic energy-saving technology in construction machinery. this study proposed a novel hydraulic accumulator with larger energy storage capacity and high controllability, which mainly comprises a
Research on energy saving system of hydraulic excavator based
To improve the potential energy loss of the boom during the lowering process, an electro-hydraulic drive and energy recovery system for excavator booms (EHDR-EEB) based
Energy-Efficiency Improvement and Processing Performance
Appl. Sci. 2020, 10, 6020 4 of 15 2. Energy-Saving Method of the Hydraulic Press 2.1. Energy Characteristics of the Hydraulic Press In Figure3, a diagram showing the working cycle of a hydraulic
Energy-saving Methods for Hydraulic Presses Based on
332 Mengdi Gao et al. / Procedia CIRP 48 ( 2016 ) 331 – 335 Summarizing the findings above, it can be claimed that, the energy saving method and low carbon design of hydraulic press mainly
Novel Automatic Idle Speed Control System with Hydraulic
energy saving methods for construction machinery, for example, positive and negative flow control system [1,2], load sensing control [3,4], hybrid power system [5–8], energy regeneration [9
Energy Saving Implementation in Hydraulic Press Using Industrial
Energy Saving Implementation in Hydraulic Press Using Industrial Internet of Things (IIoT) increase energy efficiency, including bypass valves, hydraulic accumulators mixed method based
Hydraulic accumulator-motor-generator energy regeneration system
Though the traditional energy regeneration system(ERS) which used a hydraulic motor and a generator in hybrid excavators can regenerate part of the energy, the power of the motor and the generator should be larger and the time for regenerating energy is so short. At first, the structure of new ERS that combines the advantages of an electric and hydraulic
Energy saving of hybrid hydraulic excavator with innovative powertrain
A hydraulic hybrid excavator uses a hydraulic accumulator as the energy storage unit, in which regenerated energy can also be stored . The stored energy can be reused to assist the engine in running the actuator or to run the actuator directly. Energy-saving design method for hydraulic press drive system with multi motor-pumps. Int J
Energy Saving of an Electric Forklift with Hydraulic Accumulator
A hydraulic accumulator is used in the system to store the potential energy. Then the energy could be reused in the next cycle of work. The maximum energy saving efficiency could reach 56% in one cycle. The total energy saving efficiency is 19%. The system could save much energy with low cost. So, it is easy to be used in the real forklift system.
Analysis of a novel energy-efficient system with a bidirectional
Based on the operating principle of a high-pressure water jet, this study proposes a novel energy-saving method to solve this mismatch. In the proposed method, an energy-efficient supercharging system composed of a bidirectional supercharger, recovery accumulator, and special control system was integrated into a hydraulic system for the first
An energy-saving method to reduce the installed power of hydraulic
Based on the operating principle of a high-pressure water jet, this study proposes a novel energy-saving method to solve this mismatch. In the proposed method, an energy-efficient supercharging system composed of a bidirectional supercharger, recovery accumulator, and special control system was integrated into a hydraulic system for the first time.
ENERGY SAVING SYSTEM FOR HYDRAULIC
ad prepare a basic simulation program of an actual equipment system as a preliminary order to pump step hydraulic to conduct fluid comparative verification store experiments it. When for
Research on energy saving system of hydraulic excavator based
In recent years, reducing the energy consumption in a hydraulic excavator has received deep attention in many studies. The implementation of the novel independent
Energy management in pump-controlled actuators
1 Introduction. This paper focuses on pump-controlled actuators, where flow changes are produced exclusively at the pump (Costa and Sepehri, 2015).This is particularly important when the hydraulic circuit is closed, as in Figure 1A the figure, we observe that the cylinder can act both as an energy consumer (actuator) or as an energy supplier (pump).
(PDF) Energy Efficiency Comparison of Hydraulic Accumulators
Hydraulic accumulators were found to be more power dense and power cost efficient than supercapacitors, but the supercapacitors showed a better energy density as well as costs.
(PDF) Hydraulic Energy Saving System: Modeling and Review
Triet H.H. Et.al have been developed A novel energy-saving hydraulic system based on an HST/hydraulic accumulator combination was investigated through analysis and modeling. The system improves the efficiency of the primary power source. The accumulator is used in a novel way to recover the kinetic energy without reversion of fluid flow.
An energy-saving method to solve the mismatch between installed
An energy-saving, pressure-compensated hydraulic system with an electrical approach was proposed to reduce the usage of controlling valves, while achieving pressure compensation function and regeneration (Wang and Wang, 2014).A common approach used to circumvent mismatch is to control the flow based on load sensing technique (Finzel et al., 2009).
Analysis of energy characteristic and working performance of
Xing proposed a series structure hydraulic accumulator by improving the structure of the oil outlet valve. This accumulator is in series with the input main circuit to increase the component natural frequency, which shows high energy saving, vibration absorbing and pressure pulsation reducing working performance.
Hydraulic accumulators in energy efficient circuits
1 Department of Mechanical Engineering, Federal Institute of Science and Technology of the State of Pernambuco, Recife, Brazil; 2 Department of Mechanical Engineering, University of Manitoba, Winnipeg, Manitoba, Canada; Hydraulic accumulators have long been used in hydraulic circuits. Applications vary from keeping the pressure within a circuit branch to
Research On Energy Saving and Performance Enhancement of
A new hydraulic regulation method on district heating system . 86 . To meet the demanding requirements of hydraulic accumulator and achieve the energy saving, this . 232 .
A Novel Energy Recovery System for Parallel Hybrid Hydraulic
A new boom potential energy recovery system is proposed by analyzing the excess energy of three hydraulic cylinders in the conventional hydraulic excavator and the results show that the proposed system is more effective than the conventional energy saving system. Hydraulic excavator energy saving is important to relieve source shortage and protect
Research on energy saving system of hydraulic excavator based
In order to address these issues, a hydraulic excavator energy saving system based on a three-chamber accumulator is proposed. Firstly, the conventional piston-type
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