Results 191 to 200 of about 354,081 (248)
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Journal of Scientific Instruments, 1966
A hydrocarbon-free backing pump is described in which only stainless steel, tungsten carbide and mercury are exposed to the vacuum system. The pumping speed is approximately 41. min-1 and the lowest pressure measured using the pump in conjunction with a cold trap was approximately 20 μtorr.
A J Davis, G J Ogilvie
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A hydrocarbon-free backing pump is described in which only stainless steel, tungsten carbide and mercury are exposed to the vacuum system. The pumping speed is approximately 41. min-1 and the lowest pressure measured using the pump in conjunction with a cold trap was approximately 20 μtorr.
A J Davis, G J Ogilvie
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Experimental Simulation of Piston Leakage in an Axial Piston Pump
Fluid Power Systems and Technology, 2005A method used to introduce “artificial leakage” into an axial piston pump to simulate leakage from a worn piston is described in this paper. A pressure control servo valve with a very high frequency response was employed to divert flow from the pump outlet in a prescribed waveform directly to tank.
Zeliang Li +2 more
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The Pumping Dynamics of Swash Plate Piston Pumps
Journal of Dynamic Systems, Measurement, and Control, 1989This paper describes a study of the cylinder pressure and flow in an oil hydraulic axial piston pump. A comparison is made between a theoretical model based on the effects of fluid compliance within the cylinder, and an improved model which accounts for the influence of oil momentum in the port plate region.
K. A. Edge, J. Darling
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Dynamic of an Axial Piston Pump With Floating Pistons
BATH/ASME 2024 Symposium on Fluid Power and Motion ControlAbstract A new structure of the axial piston pump was proposed to address the limitation of its application under low viscosity medium conditions due to the insufficient oil film bearing capacity. The piston of this structure is in a floating state in the axial direction, and both ends of the piston are supported by a discrete cylinder ...
Baoyu Liu +5 more
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Robust Design of Piston Assemblies in an Axial Piston Pump
International Journal of Fluid Power, 2014The piston slipper in an axial piston pump demonstrates most complicated dynamic motions: two rotations (tilting toward to the swash plate and rotating about the pump shaft) and one translation together with the pumping piston. In addition, the slipper is used to lubricate the swash plate surface with hydraulic oil, but prevents high pressure fluid ...
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A piston pump for respiration simulation
Journal of Applied Physiology, 1981U, Boutellier, U, Gomez, G, Mäder
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Health evaluation of axial piston pumps based on density weighted support vector data description
Reliability Engineering and System Safety, 2023Qun Chao
exaly