An Investigation into Micro- and Macrogeometric Design of Piston/Cylinder Assembly of Swash Plate Machines

Ivantysynova, Monika; Lasaar, Rolf

doi:10.1080/14399776.2004.10781181

Cited by 73 publications

(35 citation statements)

References 5 publications

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“…The leakage equations and the viscous torque losses were considered in his mathematical model. Ivantysynova and Lasaar [11] developed a non-isothermal gap flow model to predict the leakage, pressure distribution and temperature of all lubricating gaps in swash plate type axial piston machines. They integrated the Reynolds equation of lubrication, solved numerically for the connected gaps of swash plate axial piston machines.…”

Section: Introductionmentioning

confidence: 99%

“…The first group is volumetric losses caused by leakage flow losses, the losses in the second group are mechanical losses due to friction losses, and the third group is churning losses caused by the internal rotating components stirring the hydraulic fluid in axial piston pumps. Theoretical and experimental studies have been published on volumetric losses and mechanical losses in axial piston pumps [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Zhang

et al. 2017

Energies

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Pressure and performance requirements of axial piston pumps and the proportion of churning losses in axial piston pumps increase significantly with increasing speed. To investigate the primary distribution of churning losses in axial piston pumps at various ranges of speed, a test rig was set up in which other friction losses can be eliminated, thus making it possible to investigate the net churning losses in an axial piston pump. The influence of the rotating cylinder block and pistons on churning losses is analyzed based on a qualitative evaluation of the various fluid flow regimes at different test speeds in an axial piston pump. The analytical results indicate that pistons have less influence on churning losses than the rotating cylinder block beyond the critical speed in axial piston pumps, because the total energy dissipation transforms laminar viscous friction losses into turbulent shear stress losses. It is concluded that more attention should be given to the effect of the rotating cylinder block on churning losses in axial piston pumps at high rotation speed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Zhang

et al. 2017

Energies

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show abstract

“…However, the software only considers viscous friction, and elasto hydrodynamic effects are not considered. Using CASPAR, for example, the tribological system formed by the piston/ cylinder assembly of swash plate axial piston machines, and the influence of a piston macro and micro geometry variation on energy dissipation can be effectively investigated (Ivantysynova and Lasaar, 2004). Besides CASPAR, some particular tools, such as HYGESim (HYdraulic GEar machines Simulator), are being developed for analyzing gear pump performance with high accuracy of simulation (Devendran and Vacca, 2013).…”

Section: Typical Hydraulic Components: Pump Valve and Actuatormentioning

confidence: 99%

Engineering research in fluid power: a review

Yang

Pan

2015

J. Zhejiang Univ. Sci. A

131

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This article reviews recent developments in fluid power engineering, particularly its market and research in China. The development and new techniques of the pump, valve, and actuator are presented in brief with a discussion of two typical modern fluid power systems, which are the switched inertance hydraulic system and the hydraulic quadruped robot. Challenges and recommendations are given in four aspects including efficiency, compactness and integration, cleanliness, and fluid power education.

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“…Wieczorek and Ivantysynova examined this fact in their work [5]. To increase hydrodynamic forces that reduce the eccentricity of a piston that rotates and moves in axial direction in a bushing of axial piston pump Ivantysynova and Lasaar [6] proposed a design of a special barreled shape of the piston. This can also be not acceptable for a rotating shaft as it may cause some additional contact stresses, while variable section does not allow using minimal gap for the whole seal length.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of Rotation Transmission Device in High Ambient Hydrostatic Pressure Conditions

Kuzmin¹,

Попов²,

Stazhkov³

2017

DAAAM Proceedings

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In this article, the results of experimental research of rotation transmission device prototype characteristics are presented. The device can be used in different types of deep-water equipment. To confirm theoretical calculations of the device characteristics a prototype was designed and produced. The scheme of the prototype is explained in the article. The experiments were conducted for three different work fluids. Leakage volume dependencies on the operating pressure and shaft rotation frequency are examined. Friction torque and breakaway torque dependencies on operating pressure are examined. Efficiency coefficient and time of establishment of thermal regime of the rotation transmission device are found.

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An Investigation into Micro- and Macrogeometric Design of Piston/Cylinder Assembly of Swash Plate Machines

Cited by 73 publications

References 5 publications

Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Engineering research in fluid power: a review

Experimental Research of Rotation Transmission Device in High Ambient Hydrostatic Pressure Conditions

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