Results 161 to 170 of about 6,001 (207)
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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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2000
The invention relates to a piston pump (1) that is particularly suitable for supplying pressurized medium in electronically controlled brake systems. Said pump comprises a housing (9), a suction valve (11), a pressure valve (13) and a pump plunger (4) embodied in the form of a step piston having a section (6) with a larger diameter and another section (
CONTINENTAL TEVES AG & CO OHG +2 more
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The invention relates to a piston pump (1) that is particularly suitable for supplying pressurized medium in electronically controlled brake systems. Said pump comprises a housing (9), a suction valve (11), a pressure valve (13) and a pump plunger (4) embodied in the form of a step piston having a section (6) with a larger diameter and another section (
CONTINENTAL TEVES AG & CO OHG +2 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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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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2001
The invention relates to a piston vacuum pump, in which the joint, between the piston (10) and the connecting rod (11), which controls said piston, contains an elastic device (EV). In this manner pulsation and vibration, from the connecting rod (11), is isolated from the piston (10).
LEYBOLD VAKUUM GMBH +2 more
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The invention relates to a piston vacuum pump, in which the joint, between the piston (10) and the connecting rod (11), which controls said piston, contains an elastic device (EV). In this manner pulsation and vibration, from the connecting rod (11), is isolated from the piston (10).
LEYBOLD VAKUUM GMBH +2 more
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1984
Piston pump of which the pumping piston (10) is made tight with respect to the pumping cylinder (9) by means of linings (11) and which is connected to a piston rod (12) guided in a packing box (13) joined to the cover of the pumping cylinder (9) and which is driven according to a reciprocating motion.
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Piston pump of which the pumping piston (10) is made tight with respect to the pumping cylinder (9) by means of linings (11) and which is connected to a piston rod (12) guided in a packing box (13) joined to the cover of the pumping cylinder (9) and which is driven according to a reciprocating motion.
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2008
The invention relates to a radial piston pump (10), having a pump housing (12), having a driveshaft (14) which is arranged in the pump housing (12) and by means of which the radial piston pump (10) can be driven, having at least two pump units (13, 13') which have in each case one cylinder (38, 38'), with a cylinder longitudinal axis (Z, Z') and a ...
SIEMENS VDO AUTOMOTIVE AG +4 more
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The invention relates to a radial piston pump (10), having a pump housing (12), having a driveshaft (14) which is arranged in the pump housing (12) and by means of which the radial piston pump (10) can be driven, having at least two pump units (13, 13') which have in each case one cylinder (38, 38'), with a cylinder longitudinal axis (Z, Z') and a ...
SIEMENS VDO AUTOMOTIVE AG +4 more
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