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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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An irregular discharge flow characteristic at the cut-off pressure area of developed VDAPP in experiment.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig7: An irregular discharge flow characteristic at the cut-off pressure area of developed VDAPP in experiment.

Mentions: Figure 6 shows desirable response of the constant power regulator system. As shown in Figure 7, on the other hand, the undesirable performance of an irregular discharge flow is observed at the cut-off pressure area in the performance test results of developed VDAPP. The maximum magnitude of the fluctuation is about 10 liters per minute as shown in Figure 7. In this study, therefore, the operation principle of the mechanical regulator with VDAPP is analyzed, and it is modeled by using AMESim software in order to find out the cause of the undesirable performance. Firstly, in this section, the operation principle of the mechanical regulator with VDAPP is described.


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

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

An irregular discharge flow characteristic at the cut-off pressure area of developed VDAPP in experiment.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig7: An irregular discharge flow characteristic at the cut-off pressure area of developed VDAPP in experiment.
Mentions: Figure 6 shows desirable response of the constant power regulator system. As shown in Figure 7, on the other hand, the undesirable performance of an irregular discharge flow is observed at the cut-off pressure area in the performance test results of developed VDAPP. The maximum magnitude of the fluctuation is about 10 liters per minute as shown in Figure 7. In this study, therefore, the operation principle of the mechanical regulator with VDAPP is analyzed, and it is modeled by using AMESim software in order to find out the cause of the undesirable performance. Firstly, in this section, the operation principle of the mechanical regulator with VDAPP is described.

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