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Electro-hydraulic control valve

A technology of hydraulic control valves and control valves, which is applied to valve devices, valve details, engine components, etc., and can solve problems such as high production costs

Active Publication Date: 2018-09-25
丹佛斯动力系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This valve arrangement is reliable, but requires four solenoid valves and corresponding control components
Therefore, the production cost is relatively high

Method used

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  • Electro-hydraulic control valve
  • Electro-hydraulic control valve
  • Electro-hydraulic control valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Such as figure 1 The electrohydraulic control valve shown comprises a control valve element 2 in the form of a slide movable in a bore 3 of a housing. The control valve element 2 is not described in detail. The electrohydraulic control valve may have circumferential or longitudinal grooves and cooperate with other grooves, slots or openings in the inner wall of the bore 3 .

[0031] The control valve 2 is movable in the bore 3 in two opposite directions. One direction is indicated by arrow 4 .

[0032] The control valve element 2 is arranged between the first pressure chamber 5 and the second pressure chamber 6 . The pressure in the first pressure chamber 5 acts on the first face 7 of the control valve element 2 and the pressure in the second pressure chamber 6 acts on the second face 8 of the control valve element 2 . Depending on the pressure difference acting on the faces 7 , 8 , the control valve element 2 is displaced in the longitudinal direction within the bo...

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PUM

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Abstract

The invention discloses an electrohydraulic control valve (1), which comprises a valve displaceable in a first direction by pressure in a first pressure chamber (5) and a valve in a second pressure chamber (6). ) in the control valve element (2) displaceable in the second direction by pressure, each pressure chamber (5, 6) is connected to the high pressure port (PP) and the low pressure port (PT ) between lines. The control valve should be reliable and simple in construction. To this end, each solenoid valve (11, 12) is a three-way valve and comprises a first valve seat (17) and a second valve seat (18), said first valve seat (17) and said second valve seat The space (19) between the valve seats (18) is connected to the pressure chambers (5, 6), and the first valve element (20) positioned outside the space (19) is connected to the first A valve seat (17) cooperates and a second valve element (21) positioned outside said space (19) cooperates with said second valve seat (18).

Description

technical field [0001] The invention relates to an electrohydraulic control valve comprising a valve element displaceable in a first pressure chamber by pressure in a first direction and in a second pressure chamber by pressure in a second direction Each pressure chamber is connected to the line between the high pressure port and the low pressure port via a solenoid valve. Background technique [0002] Such a control valve is known, for example, from DE 10 2005 043 458 B4. The high pressure port is connected to a proportional valve. The proportional valve is connected to a loose-leaf valve with two outputs, each connected to one of the two pressure chambers. A proportional valve allows regulation of the pressure from the high pressure port. The loose-leaf valve is intended to direct said pressure from the proportional valve to one of the two pressure chambers. The valve element will move in one of two directions depending on which pressure chamber is supplied with the hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
CPCF15B13/02F15B13/0433F15B13/0402Y10T137/86614Y10T137/8671F16K31/423
Inventor 雷文·克耶尔德弗罗布莱夫斯基·德克
Owner 丹佛斯动力系统有限公司