Device for reducing pressure pulsations in hydraulic manifolds

A pressure pulsation, pressure technology, applied in the direction of pipe elements, fluid flow, springs/shock absorbers, etc., can solve problems such as high cost

Inactive Publication Date: 2003-02-26
DOBSON INDS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The self-adaptation of the operating pressure via the throttling line requires an additional

Method used

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  • Device for reducing pressure pulsations in hydraulic manifolds
  • Device for reducing pressure pulsations in hydraulic manifolds
  • Device for reducing pressure pulsations in hydraulic manifolds

Examples

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Example Embodiment

[0026] figure 1 The simplified and general display shows the cross-section of the passive pulsation buffer of the present invention, which is suitable for being assembled in the hydraulic piping system of the power steering of an automobile, for example. according to figure 1 In this way, the pulsation buffer of the present invention is connected to the hydraulic pipeline or between the input port 3 and the output port 5 or in the branch of the hydraulic pipeline, that is, the pipeline is connected to the pulsation buffer through the connecting pipeline 3a or 5a. The connecting pipe 3 a or 5 a leads to the balance chamber 7, and the balance chamber 7 is divided into a hydraulic balance chamber 13 through a thin film 9 such as a metal thin film, an elastomer or a movable wall in the middle.

[0027] The pressure balance chamber 13 is connected to the gas chamber 17 in the energy storage membrane 15 through the through hole 14. The gas chamber 17 and the energy storage membrane 1...

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Abstract

The invention relates to a device for reducing pressure pulsations caused in a hydraulic system, especially by a pump. Said device comprises a compensation volume (41) with a displaceable wall or membrane (39) that is located in said volume and that shuts off the volume. On one side, said wall or membrane is impinged upon with pulsations and on the opposite side with a counter-pressure which corresponds to at least approximately the average pressure of the hydraulic system. The pressure compensation volume (43) that is applied on the opposite side of the wall or membrane (39) is linked with the hydraulic system via a compensation manifold (51), said manifold (51) opening into the hydraulic system downstream of the compensation volume (41) in the direction of propagation of the pulsations.

Description

technical field [0001] The invention relates to a device according to the preamble of claim 1 for reducing pressure pulsations in a hydraulic line, in particular via a pump, and to a motor vehicle power steering with such a device. Background technique [0002] The movement of most hydrostatic or other pumps used in oil hydraulic circuits and the manipulation of fittings, valves and regulating devices results in pressure fluctuations which are the root cause of unwanted noise in hydraulic systems. Furthermore, a further consequence is that the lines, their fastenings and connected consumers are stressed to a certain degree. [0003] In this way, the power supply to, for example, the power steering and other hydraulic consumers in a motor vehicle takes place via the hydraulic squeeze unit. Due to the discontinuous delivery process, the extrusion unit causes pressure pulsations or volume flow pulsations which propagate through the hydraulic medium in the line system. Especia...

Claims

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Application Information

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IPC IPC(8): F16L55/04F15B1/08F15D1/02F16F15/02F16F15/023F16F15/04F16J3/02F16L55/05F16L55/053
CPCF16L55/053F16L55/05
Inventor 克劳斯-于尔根·库尔
Owner DOBSON INDS CORP
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