The influence of dynamic swash plate vibration on outlet flow ripple in constant power variable-displacement piston pump

Pan, Yang; Li, Yibo; Liang, Daolun

doi:10.1177/0954406219840379

Cited by 15 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equation ( 14) shows that the change of swash plate inclination angle affects the piston chamber pressure. According to the research results of Pan et al(2019), the pressure fluctuation rate (1.35%) calculated by considering swash plate vibration is closer to the test pressure fluctuation rate (2.4%) when the load pressure is 20MPa. (3)The experimental results are affected by the pipeline impedance of the excavator.…”

Section: Experimental Test Analysismentioning

confidence: 69%

See 1 more Smart Citation

Fluid Dynamic Characteristics and Flow Distribution ‎Structure Optimization of Axial Piston Pump Considering ‎Cavitation Bubble Evolution

Pan

Chen

Wang

2021

JAFM

View full text Add to dashboard Cite

An axial piston pump can produce a serious cavitation phenomenon in the high-and low-pressure transition process. Cavitation bubbles expand, compress, rebound and collapse when they enter the high-pressure oil drainage area. This affects the outlet flow ripple as well as the pressure pulsation of the piston pump. However, the effect of the cavitation bubbles is ignored in the current outlet flow ripple model of axial piston pumps. It affects the optimization design of the axial piston pump distribution area structure parameters with the objective of reducing the pressure and flow rate. Therefore, a method of optimizing the fluid dynamic characteristics and the flow distribution area structure parameters of an axial piston pump considering the cavitation bubble evolution is proposed. A single-cavity dynamic model was established to study the bubble evolution as the piston chamber pressure changes. According to the cavitation cloud (group cavitation) characteristics of the axial piston pump, theoretical models of the outlet flow ripple and the pressure pulsation of a piston pump were established considering the cavitation bubble characteristics. The influence of cavitation characteristics on the outlet flow ripples and pressure pulsation of the axial piston pump was analyzed and compared with that without cavitation. Comparison with the experimental results, verified that the outlet flow ripple model becomes more accurate when cavitation bubble characteristics are considered. Based on the multi-agent particle swarm optimization (MAPSO) algorithm, an optimization model of the piston pump outlet flow ripple was established considering the cavitation bubble characteristics. The optimized design parameters for the flow distribution area of the axial piston pump were evaluated. The proposed method can provide theoretical guidance for the design of a low flow ripple axial piston pump.

show abstract

Section: Experimental Test Analysismentioning

confidence: 69%

“…In this paper, a reference Pan et al (2019) is provided for calculating the area of the discharge port.…”

Section: Optimization Design Analysis Of Valve Platementioning

confidence: 99%

Fluid Dynamic Characteristics and Flow Distribution ‎Structure Optimization of Axial Piston Pump Considering ‎Cavitation Bubble Evolution

Pan

Chen

Wang

2021

JAFM

View full text Add to dashboard Cite

show abstract

“…Researchers have conducted plenty of research on this through theory, simulation, and experiment. [21][22][23][24][25][26][27] For example, Hao et al proposed an effective lossreducing structure based on the study of the factors affecting piston engine oil pressure. 21 Huang et al studied the leakage loss of a miniature free-piston linear engine.…”

Section: Introductionmentioning

confidence: 99%

“…23 Pan et al studied the effect of swash plate vibration on the leakage of axial Swash piston pump. 24 Schaller et al studied the effect of the geometry of the seal chamber on the leakage rate. 25 Wang et al studied the characteristic of the compound piston.…”

Section: Introductionmentioning

confidence: 99%

Research on sealing characteristics of annular power cylinder based on twin-rotor piston engine

Pan

Liu

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The sealing characteristics of an annular power cylinder based on the Twin-rotor piston engine are studied, which provides a theoretical foundation for the sealing design of a new high-power density piston engine. In this paper, the basis thermodynamic realization process of an annular power cylinder is presented. The Runge Kutta equation is used to establish the coupled leakage model of adjacent working chambers under annular piston seal. And the sealing performance of the annular power cylinder is analyzed in detail. Moreover, the influence of rotor speed and compression ratio on the sealing characteristics and leakage is studied. Finally, some tests are carried out to verify the sealing principle and simulation results, which verifies the theoretical basis of simulation analysis. Results show that there are double pressure peaks in the leakage chamber between two working chambers, which is beneficial to reduce the leakage rate. Besides, increasing the speed and decreasing the compression ratio can help to reduce gas leakage. Furthermore, the effects of speed variation on the leakage are only significant when rotating at low speed. Changing the compression ratio has a greater effect on the slope of the leakage curve at a low compression ratio, and the lower the compression ratio, the better the sealing effect.

show abstract

“…Pan Y. and Li Y. [18] proposed a theoretical model of the outlet flow ripple and pressure pulsation of a constant power variable-displacement piston pump. The proposed model considered the vibration of the swash plate, flow leakage, and valve dynamic characteristics.…”

Section: Introductionmentioning

confidence: 99%

Flow Ripple Reduction of Axial-Piston Pump by Structure Optimizing of Outlet Triangular Damping Groove

et al. 2020

View full text Add to dashboard Cite

The triangular damping groove on the valve plate can effectively reduce the discharge flow ripple of an axial piston pump, which structural parameters will directly affect the pump’s dynamic characteristics. Herein, a multi-parameter data-based structure optimizing method of the triangular damping groove is investigated using numerical models and simulation results. The mathematical models of a nine-piston pump are proposed and developed by MATLAB/Simulink, and the simulation results are verified by experimental results. Then, the effects of width angle and depth angle on discharge flow are analyzed. Based on the analysis of groove parameters, an optimizing index, which considering the time domain characteristics of discharge flow, is proposed. As results show, comparing with the initial specific groove structure, the amplitude of flow ripple is reduced from 14.6% to 9.8% with the optimized structure. The results demonstrate that the outlet flow ripple can be significantly reduced by the optimized structure, and the proposed multi-parameter optimizing method can play a guiding significance in the design of low-ripple axial piston pumps.

show abstract

The influence of dynamic swash plate vibration on outlet flow ripple in constant power variable-displacement piston pump

Cited by 15 publications

References 20 publications

Fluid Dynamic Characteristics and Flow Distribution ‎Structure Optimization of Axial Piston Pump Considering ‎Cavitation Bubble Evolution

Fluid Dynamic Characteristics and Flow Distribution ‎Structure Optimization of Axial Piston Pump Considering ‎Cavitation Bubble Evolution

Research on sealing characteristics of annular power cylinder based on twin-rotor piston engine

Flow Ripple Reduction of Axial-Piston Pump by Structure Optimizing of Outlet Triangular Damping Groove

Contact Info

Product

Resources

About