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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

Simulation result of discharge flow ripple for variable displacement axial piston pump.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3824334&req=5

fig17: Simulation result of discharge flow ripple for variable displacement axial piston pump.

Mentions: Figure 17 shows the simulation result when the pump is driven at 4500 rpm under no-load condition. The discharge flow rate is the sum of the flow rate of each piston. The pulsation in flow rate is observed in simulation result as shown in Figure 17. This simulation results also show that the average value of the discharge flow rate 49.8 L/min is less than the theoretical one 52 L/min because the internal leakage through the gap between the piston and cylinder block is considered in computer simulation.


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

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

Simulation result of discharge flow ripple for variable displacement axial piston pump.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig17: Simulation result of discharge flow ripple for variable displacement axial piston pump.
Mentions: Figure 17 shows the simulation result when the pump is driven at 4500 rpm under no-load condition. The discharge flow rate is the sum of the flow rate of each piston. The pulsation in flow rate is observed in simulation result as shown in Figure 17. This simulation results also show that the average value of the discharge flow rate 49.8 L/min is less than the theoretical one 52 L/min because the internal leakage through the gap between the piston and cylinder block is considered in computer simulation.

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