the excavator''s performance and reduce the energy consumption in the work process, and the optimization quality of each objective can be more balanced. Energies 2023, 16, 7056 3 of 18
The energy storage chamber C of the HPES hydraulic cylinder is connected to an accumulator to balance the weight of the working device by setting appropriate pressure of the accumulator. ... For no energy recovery device, the GPE loss power is high about 6 kW. ... the energy loss in the 6-ton hydraulic excavator is much …
The hydraulic accumulator has the advantages of high power density, fast response, stable operation and high cost performance. However, compared with the electric energy storage method, the hydraulic accumulator has low energy density and large pressure fluctuation while absorbing and discharging energy, which severely limits its …
The energy storage device is a super capacitor with a capacity of 12.5 F and a maximum voltage of 400 V. To investigate how much more energy should be consumed in the orifice control in the AMGERS than in the MGERS, a PDV with a 1.67 × 10 − 3 m 3 /s rated flow rate and 3.5 MPa rated pressure drop is used to control the boom …
Hybrid technology applied to vehicles and construction machineries is one of the promising technologies to address environmental challenges. The energy storage …
Supercapacitors have also been regarded as the appropriate energy storage devices of hybrid powertrain systems, which are designed to bridge the gap between batteries and capacitors to form …
This paper reviews energy storage types, focusing on operating principles and technological factors. In addition, a critical analysis of the various energy storage types is provided by reviewing and comparing the applications (Section 3) and technical and economic specifications of energy storage technologies (Section 4) novative energy …
Then, a hydraulic excavator energy saving system based on three-chamber accumulator is proposed, which can store and reuse the energy loss from …
The simulation and the experimental results show that the proposed control method has a much faster response for the energy-saving operating points, which reduces the energy consumption by 9.28% and 5.56% without adding any energy storage devices to the hydraulic excavator.
of the energy storage devices, and finally to determine the most effective hybrid system layout. Electrification of excavators was described in Vauhkonen [10]. For this study, a JCB Micro
When the energy storage hydraulic cylinder [10,11] or energy storage chamber [12] [13] [14] is used to recover the gravitational potential energy, the gravity of the working device can also be ...
The research is developed on a 6 t hydraulic excavator, and the working device consists of boom (305 kg), arm (185 kg) and bucket (205 kg). The boom is driven by a double-chamber hydraulic cylinder, and the diameters of the piston and piston rod are 100 mm and 70 mm. ... which has a pressurizing function during energy storage. Then, a …
This scheme belongs to the excavator boom potential energy regeneration method. ... Recent advances in nanoporous oxide electrodes in energy conversion and storage devices, such as fuel cells ...
Based on comprehensive consideration, this article presents a compound potential energy regeneration system that combines the regeneration device and throttle together. The regenerative torque is adaptive to load so as to keep the pressure drop over the throttle almost constant, and then the actuator can be governed by adjusting the …
Furthermore, the charging and discharging characteristics of the device were tested. Experimental results showed that the average energy storage efficiency of the device reached 76.9%, and the volume energy density was 309.48 kJ/m 3, which is twice that of a traditional rigid gas storage tank.
The storage options include devices such as a battery or a supercapacitor [18,19]. ... A Boom Energy Regeneration System of Hybrid Hydraulic Excavator Using Energy Conversion Components. Actuators 2021, 10, 1. [Google Scholar] Yu, Y.; Ahn, K.K. Energy Regeneration and Reuse of Excavator Swing System with …
The control precision of the working device has always been a challenging aspect in unmanned excavator research due to the adoption of a triangular drive mode and a complex hydraulic system in the working mechanism. ... which has a pressurizing function during energy storage. Then, a hydraulic excavator energy saving system based on …
This paper proposed a novel energy management strategy for a PEM fuel cell excavator with a supercapacitor/battery hybrid power source. The fuel cell is the main power supply for most of the excavator workload while the battery/supercapacitor is the energy storage device, which supplies additional required power and recovers energy.
The energy storage density of an accumulator, as defined in the Ref. [31] and Ref. [35], is the ratio of the energy stored in the gas inside the accumulator to the total volume of the accumulator. Based on the result 1.84/1.2842 = 1.4328, it can be concluded that the energy storage density of the TCA is 1.4328 times higher than that of ...
Abstract: This paper describes an optimal energy management approach for a fuel cell hybrid excavator (FCHE) powered by a fuel cell (FC) system and energy storage devices composed of a Li-ion battery pack and supercapacitor bank. In order to meet the fuel-saving demand, an equivalent consumption minimization strategy (ECMS) is proposed, which …
Recovery and regeneration the wasted energy is an important means to achieve energy saving and emission reduction of excavators. In this paper, a potential …
First, potential recoverable energy sources in excavator mechanisms are analyzed. Next, energy regeneration systems are classified according to energy storage devices and their development is ...
Energy storage device! ACCUMULATOR Crane Safety & Technical Information Vol. 3 Warning…. Whenever the accumulator pressure bladder falls below the recommended pressure range of 3.4 - 3.7 MPa, warning codes will be displayed and the operator can notice it from inside the cab. ‣CKE series : On cluster gauge ‣CKS & 7000S series : On …
In transportation conditions, the output energy of the engine only accounts for 49.80% of the engine''s fuel energy, and the torque converter efficiency loss and excavator driving energy account ...
Some of the options for energy storage in energy regeneration Energies 2020, 13 devices include flywheels, compressed air, electrical energy storage systems (EESS), and hydraulic energy storage ...
The comparison shows that flywheels display many advantages over other energy storage devices. Meanwhile, the drawbacks of flywheels are discussed in detail, indicating that the drawbacks can be ...
A broad and recent review of various energy storage types is provided. ... a high power density device is needed. Energy storage systems also can be classified based on storage period. Short-term energy storage typically involves the storage of energy for hours to days, while long-term storage refers to storage of energy from a few months to …
This paper presents an innovative powertrain design and an energy regeneration system for hybrid hydraulic excavators to reduce energy consumption and …
method for an excavator to reduce energy consumption during the working process while maintaining. optimal performance. By formulating a mathematical model that quantifies the energy consumption ...
Studies on a 20-ton hydraulic excavator show that the energy that can be potentially regenerated during one duty cycle from the boom, arm, bucket, and swing is as high as 260.4 kJ [3]. For a typical excavator truck-loading cycle, research shows that without energy regeneration the overall efficiency of the centralized system is as low as …
dent valves of excavator by incorporating the off-side pressure dynamics into the controller design. Energy recovery is another energy-saving method which can be realized using hydraulic or electrical energy storage devices.4 The excess energy is converted to hydraulic or School of Mechanical Engineering, China University of Mining and
The closed circuit GPE regeneration system [GPERS] associated with the boom of excavator is proposed by Chen et al. [21] which employ a hydraulic accumulator as main energy storage element fabricated in novel configuration with the aim of recovering entire GPE linked with the boom of hydraulic excavator. In this article, two pump motors …
Generally, a combined energy storage system is com-posed of two basic energy storage devices: one has high specific energy, whereas the other has high …
In this paper, a novel series hybrid hydraulic excavator based on electro-hydraulic composite energy storage, which provides the average power of the system …
been successfully used on a 50 t hydraulic excavator. The energy consumption is reduced by 37% when the boom rises through the variable pump. Fu et al. [7] proposed a boom ... a hydraulic accumulator as a storage device to recover the potential energy of the boom. The recovered energy was utilized as the mechanical force to …
Super capacitors are energy storage devices that have the advantages of rapid charging, a high charge, an efficient discharge and a semi-permanent cycle life. In this study, a simulation of the optimal management was performed by applying a super capacitor with these characteristics to the energy regeneration system of an electric excavator.
valves and hydraulic excavator, there is a large throttling loss and waste of gravitational potential energy causing a large amount of energy consumption [15]. Closed pump control technology can reduce throttling loss of the hydraulic system and recover device potential energy, obtaining high energy efficiency. Monica research
First, potential recoverable energy sources in excavator mechanisms are analyzed. Next, energy regeneration systems are classified according to energy storage devices and their development is comprehensively reviewed through the state-of-art.
A pure electric structure can use a battery, super capacitor (SC), and fuel cell (FC) as an energy storage device [[18], ... Improvement of boom control performance for hybrid hydraulic excavator with potential energy recovery. Autom. Constr., 30 (2013), pp. 161-169, 10.1016/j tcon.2012.11.034. View PDF View article View in Scopus Google …
hybrid excavator. The advantages of high energy density of ... However, the energy storage device in the system is continuously charging and discharging with a large value, which not only has a ...
hydraulic or electric energy storage devices such as hydraulic accumulators, electric batteries or supercapacitors. Some major excavator companies have already implemented these solutions on their hybrid excavators available on the market. Komatsu introduced the world''s first hydraulic hybrid
To address the limitation of existing excavator optimization methods, which primarily focus on the force performance while neglecting energy consumption and fail to realize environmentally friendly and low-carbon designs, this paper proposes a new multi-objective collaborative optimization method for an excavator to reduce energy …