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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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Related in: MedlinePlus

SOC of the battery.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4227448&req=5

fig14: SOC of the battery.

Mentions: In order to analyze the influence of the different aeration pressure on the energy recovery efficiency, four values 5 MPa, 7 MPa, 9 MPa, and 10 MPa are selected within the scope of the aeration pressure. Run the simulation models. Figures 11 and 12 present the volume and pressure changing of the accumulator. The rotational speed of the hydraulic motor is shown in Figure 13. The SOC of the battery is shown in Figure 14.


A novel energy recovery system for parallel hybrid hydraulic excavator.

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

SOC of the battery.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig14: SOC of the battery.
Mentions: In order to analyze the influence of the different aeration pressure on the energy recovery efficiency, four values 5 MPa, 7 MPa, 9 MPa, and 10 MPa are selected within the scope of the aeration pressure. Run the simulation models. Figures 11 and 12 present the volume and pressure changing of the accumulator. The rotational speed of the hydraulic motor is shown in Figure 13. The SOC of the battery is shown in Figure 14.

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
Related in: MedlinePlus