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Modeling and performance improvement of the constant power regulator systems in variable displacement axial piston pump.

Park SH, Lee JM, Kim JS - ScientificWorldJournal (2013)

Bottom Line: The validity of the simulation model of the constant power regulator system is verified by comparing simulation results with experiments.The shape modification of the counterbalance piston is proposed to improve the undesirable performance of the mechanical-type constant power regulator.The performance improvement is verified by computer simulation using AMESim software.

View Article: PubMed Central - PubMed

Affiliation: School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, Busan 609-732, Republic of Korea.

ABSTRACT
An irregular performance of a mechanical-type constant power regulator is considered. In order to find the cause of an irregular discharge flow at the cut-off pressure area, modeling and numerical simulations are performed to observe dynamic behavior of internal parts of the constant power regulator system for a swashplate-type axial piston pump. The commercial numerical simulation software AMESim is applied to model the mechanical-type regulator with hydraulic pump and simulate the performance of it. The validity of the simulation model of the constant power regulator system is verified by comparing simulation results with experiments. In order to find the cause of the irregular performance of the mechanical-type constant power regulator system, the behavior of main components such as the spool, sleeve, and counterbalance piston is investigated using computer simulation. The shape modification of the counterbalance piston is proposed to improve the undesirable performance of the mechanical-type constant power regulator. The performance improvement is verified by computer simulation using AMESim software.

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Related in: MedlinePlus

Hydraulic circiut for pump test rig.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3824334&req=5

fig19: Hydraulic circiut for pump test rig.

Mentions: Figure 19 shows the hydraulic circuit of test rig for VDAPP. The angular velocity of the electric motor is regulated as 4500 rpm, and the load pressure is adjusted by adjustable relief valve which installed in the discharge line of the VDAPP. The discharge pressure is slowly increased during 45 seconds. The load pressure, the discharge flow rate, and the angular velocity and the torque of the electric motor are acquired by data acquisition board in real time.


Modeling and performance improvement of the constant power regulator systems in variable displacement axial piston pump.

Park SH, Lee JM, Kim JS - ScientificWorldJournal (2013)

Hydraulic circiut for pump test rig.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3824334&req=5

fig19: Hydraulic circiut for pump test rig.
Mentions: Figure 19 shows the hydraulic circuit of test rig for VDAPP. The angular velocity of the electric motor is regulated as 4500 rpm, and the load pressure is adjusted by adjustable relief valve which installed in the discharge line of the VDAPP. The discharge pressure is slowly increased during 45 seconds. The load pressure, the discharge flow rate, and the angular velocity and the torque of the electric motor are acquired by data acquisition board in real time.

Bottom Line: The validity of the simulation model of the constant power regulator system is verified by comparing simulation results with experiments.The shape modification of the counterbalance piston is proposed to improve the undesirable performance of the mechanical-type constant power regulator.The performance improvement is verified by computer simulation using AMESim software.

View Article: PubMed Central - PubMed

Affiliation: School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, Busan 609-732, Republic of Korea.

ABSTRACT
An irregular performance of a mechanical-type constant power regulator is considered. In order to find the cause of an irregular discharge flow at the cut-off pressure area, modeling and numerical simulations are performed to observe dynamic behavior of internal parts of the constant power regulator system for a swashplate-type axial piston pump. The commercial numerical simulation software AMESim is applied to model the mechanical-type regulator with hydraulic pump and simulate the performance of it. The validity of the simulation model of the constant power regulator system is verified by comparing simulation results with experiments. In order to find the cause of the irregular performance of the mechanical-type constant power regulator system, the behavior of main components such as the spool, sleeve, and counterbalance piston is investigated using computer simulation. The shape modification of the counterbalance piston is proposed to improve the undesirable performance of the mechanical-type constant power regulator. The performance improvement is verified by computer simulation using AMESim software.

Show MeSH
Related in: MedlinePlus