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A novel energy recovery system for parallel hybrid hydraulic excavator.

Li W, Cao B, Zhu Z, Chen G - ScientificWorldJournal (2014)

Bottom Line: The results show that the proposed system is more effective than the conventional energy saving system.At last, the main components of the proposed energy recovery system including accumulator and hydraulic motor are analyzed for improving the energy recovery efficiency.The measures to improve the energy recovery efficiency of the proposed system are presented.

View Article: PubMed Central - PubMed

Affiliation: School of Mechanical Engineering, China University of Mining and Technology, Xuzhou 221116, China.

ABSTRACT
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 boom cylinder, hydraulic motor, and hydraulic accumulator are built. The natural frequency of the proposed energy recovery system is calculated based on the mathematical models. Meanwhile, the simulation models of the proposed system and a conventional energy recovery system are built by AMESim software. The results show that the proposed system is more effective than the conventional energy saving system. At last, the main components of the proposed energy recovery system including accumulator and hydraulic motor are analyzed for improving the energy recovery efficiency. The measures to improve the energy recovery efficiency of the proposed system are presented.

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AMESim model of a conventional boom energy recovery system.
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Related In: Results  -  Collection


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fig7: AMESim model of a conventional boom energy recovery system.

Mentions: In order to verify the energy saving efficiency of the proposed system, simulations with the proposed accumulator-generator system and the conventional energy recovery system have been carried out by using AMESim. It aims to validate the impact of accumulator on energy recovery efficiency. Figure 6 shows the AMESim model of the proposed system with accumulator, while Figure 7 displays another kind of boom energy recovery system without accumulator. To simplify the system, the engines are replaced by two motors in Figures 6 and 7.


A novel energy recovery system for parallel hybrid hydraulic excavator.

Li W, Cao B, Zhu Z, Chen G - ScientificWorldJournal (2014)

AMESim model of a conventional boom energy recovery system.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4227448&req=5

fig7: AMESim model of a conventional boom energy recovery system.
Mentions: In order to verify the energy saving efficiency of the proposed system, simulations with the proposed accumulator-generator system and the conventional energy recovery system have been carried out by using AMESim. It aims to validate the impact of accumulator on energy recovery efficiency. Figure 6 shows the AMESim model of the proposed system with accumulator, while Figure 7 displays another kind of boom energy recovery system without accumulator. To simplify the system, the engines are replaced by two motors in Figures 6 and 7.

Bottom Line: The results show that the proposed system is more effective than the conventional energy saving system.At last, the main components of the proposed energy recovery system including accumulator and hydraulic motor are analyzed for improving the energy recovery efficiency.The measures to improve the energy recovery efficiency of the proposed system are presented.

View Article: PubMed Central - PubMed

Affiliation: School of Mechanical Engineering, China University of Mining and Technology, Xuzhou 221116, China.

ABSTRACT
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 boom cylinder, hydraulic motor, and hydraulic accumulator are built. The natural frequency of the proposed energy recovery system is calculated based on the mathematical models. Meanwhile, the simulation models of the proposed system and a conventional energy recovery system are built by AMESim software. The results show that the proposed system is more effective than the conventional energy saving system. At last, the main components of the proposed energy recovery system including accumulator and hydraulic motor are analyzed for improving the energy recovery efficiency. The measures to improve the energy recovery efficiency of the proposed system are presented.

Show MeSH