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  • Recovering system of swing braking energy in hydraulic

    To achieve energy saving for hydraulic excavator, a control strategy applied in parallel hybrid hydraulic excavator system was developed. Structure of the parallel hybrid hydraulic excavator

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  • Research on Optimal Control of Excavator Negative Control

    In order to improve the energy efficiency and dynamic of negative control swing systems of excavators, this paper proposes a technical scheme of adding two PRVs (pressure reducing valves) to main valve pilot control circuit, which can adjust main value opening arbitrarily according to the working condition. A pump-value compound control strategy was formulated to regulate the system power flow.

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  • EC250E Hybrid | Excavators | Overview | Volvo Construction

    Big fuel savings. The EC250E Hybrid crawler excavator utilizes pioneering Volvo hydraulic hybrid technology to lower fuel consumption by up to 15%. Using the boom down motion to charge the accumulator, the excavator uses this stored energy to drive the assist motor lowering the torque requirement on the engine.

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  • A Novel Energy Recovery System for Parallel Hybrid

    Hydraulic excavator energy saving is important to relieve source shortage and protect environment. This paper mainly discusses the energy saving for the hybrid hydraulic excavator. By analyzing the excess energy of three hydraulic cylinders in the conventional hydraulic excavator, a new boom potential energy recovery system is proposed. The mathematical models of the main components including

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  • Potential Energy Recovery System of Hydraulic Hybrid …

    A novel energy regeneration swing system is proposed for hydraulic excavator in this paper to reduce the energy consumption. Two independent accumulators are proposed for use in the hybrid swing

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  • Hybrid Hydraulic Excavator

    Hybrid hydraulic excavator stores electricity in a lithium-ion battery by collecting energy and generating electricity, using swinging energy when the swing device of the electric motor decelerates, while assistance is provided to the hydraulic motor when accelerating. Furthermore, the assisting power The improvement of the energy-saving

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  • Power Matching and Energy Efficiency Improvement of

    Dec 04, 2019 · H Kim, S Yoo, S Cho. Hybrid control algorithm for fuel consumption of a compound hybrid excavator. Automation in Construction, 2016, 68: 1–10. Article Google Scholar [10] T L Lin, W P Huang, H L Ren, et al. New compound energy regeneration system and control strategy for …

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  • Improvement of Energy Regeneration for Hydraulic …

    Up to12%cash back · Oct 25, 2019 · The multiple energy conversions also lead to low energy saving efficiency. A hydraulic hybrid excavator could balance the cost of the system and energy saving efficiency by using hydraulic accumulator to store the regenerated energy with low cost. The energy regeneration of a swing system by using a hydraulic accumulator was researched . Two system …

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  • Hybrid excavators capture wasted energy for maximum fuel

    Jan 11, 2013 · 3) Reuse energy via the hydraulic hybrid swing system, which captures the excavator's upper structure swing brake energy in accumulators, and …

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  • Komatsu HB365LC-3 Hybrid Excavator Details

    Komatsu America Corp., a leading global heavy equipment manufacturer, introduced the new HB365LC-3 hybrid excavator at CONEXPO-CONAGG 2017. It features improved hybrid and total-vehicle-control systems, to help reduce fuel consumption by up to 20 percent, – depending on application – while maintaining or exceeding operating performance, compared to 36-ton, non-hybrid excavators.

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  • Hybrid Hydraulic Excavator

    Hybrid hydraulic excavator stores electricity in a lithium-ion battery by collecting energy and generating electricity, using swinging energy when the swing device of the electric motor decelerates, while assistance is provided to the hydraulic motor when accelerating. Furthermore, the assisting power The improvement of the energy-saving

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  • Energy-Saving Analysis of Hydraulic Hybrid Excavator …

    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 process.

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  • Optimization of energy regeneration of hybrid hydraulic

    Mar 01, 2019 · Saving energy is important and necessary for hydraulic excavators. This paper proposed a novel energy regeneration boom system. A variable displacement hydraulic motor and flow control valve were used to regulate the torque and speed of the generator, and to …

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  • Cat® 336E H Hydraulic Hybrid Excavator Delivers No

    The new Cat ® 336E H excavator centers on an innovative, fuel-saving "hydraulic hybrid" system that captures and reuses energy. Greater fuel efficiency is the net result—as much as 50 percent greater than the 336D. The benefits include lower fuel costs, reduced exhaust emissions and a smaller carbon footprint—all without any compromise in production, reliability, durability or operability

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  • Energy saving solutions for a hydraulic excavator

    Sep 01, 2017 · Li et al. [15] proposed a novel layout for a 21 t excavator which exploits hydraulic accumulators to recover boom potential energy, kinetic swing motor energy and the overflow of the main relief valve, obtaining a 16% fuel saving and higher efficiency compared with the conventional machine.

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  • Energy saving of hybrid hydraulic excavator with

    Sep 15, 2021 · An innovative hydraulic hybrid excavator is proposed in this paper to save energy. An electrical hydraulic continually variable powertrain is proposed to drive the main pump, in which both the speed and torque of the engine can be controlled to ensure that the engine working points lie in the high efficiency range with the proposed energy management strategy.

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  • Energy-saving analysis of hydraulic hybrid excavator based

    Jan 01, 2013 · Free Online Library: Energy-saving analysis of hydraulic hybrid excavator based on common pressure rail.(Research Article, Report) by "The Scientific World Journal"; Biological sciences Environmental issues Energy consumption Control Energy management Methods Energy management systems Excavating machinery Energy use

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  • Volvo CE's different approach to hybrid tech - Equipment

    Aug 24, 2020 · For Volvo Construction Equipment's first hydraulic hybrid excavator, the EC300E, the company took a different approach to capturing energy for the system. Unlike other hybrid models that capture the swing energy of an excavator's superstructure to electrically assist the engine, Volvo's novel hydraulic hybrid takes free energy generated

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  • Setting New Trends: Volvo Hybrid Hydraulic Technology

    Feb 17, 2020 · But with our unique hybrid technology, this isn't the case at all. How it works. A Simply Reliable Hybrid Excavator Design. The concept is incredibly simple. We take the energy generated by the boom-down motion, capture it hydraulically, and use it to assist the boom-up motion, which is where you need most of the pressure and power during

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  • Engineering a groundbreaking hydraulic hybrid

    Sep 16, 2016 · We started development of electric and hydraulic versions in parallel. However, an electric hybrid eliminates the hydraulic motor and circuit that controls excavator swing motion, and replaces it with electric motors, generators, ultracapacitors to store energy, a cooling system for the power electronics and many other components.

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