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Valve assembly and pressure control method

A valve assembly and control valve technology, applied in the field of pressure valve assemblies, can solve the problem of economical and uneconomical replacement of a single diaphragm, and achieve the effect of long service life

Pending Publication Date: 2021-08-20
KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Individual diaphragm replacement is usually not economically justifiable

Method used

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  • Valve assembly and pressure control method
  • Valve assembly and pressure control method
  • Valve assembly and pressure control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 A connection diagram of a valve assembly for controlling pressure according to one embodiment of the present invention is shown. as if from Figure 3A A first valve 110 (for example, a holding valve) and a second valve 120 (for example, a discharge valve) are arranged in series between the input port P1 and the pressure reducing device S, as in a conventional valve assembly. The pressure reducing device S may have one or more openings to the surrounding environment or comprise one or more regions of reduced pressure. The first valve 110 comprises a control input 112 which is connected to a first control valve 115 . The first control valve 115 connects the control connection 112 of the first valve 110 to the pressure reduction device S or to the input port P1. The second valve 120 also includes a control input 122 which is controlled via a second control valve 125 . The second control valve 125 connects the control connection 122 of the second valve 120 to t...

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Abstract

The invention relates to a valve assembly for pressure control on an output port (P2). The valve assembly comprises an inlet port (P1), a pressure sink (S), a first valve (110) having a first control connection (112), and a second valve (120) having a second control connection (122), which are arranged in series between the inlet port (P1) and a pressure sink (S) and between which the outlet port (P2) branches off. The valve assembly also comprises a first control valve (115), which controllably connects the first control connection (112) to the inlet port (P1) or vents same, and a second control valve (125), which controllably connects the second control connection (122) to the outlet port (P2) or vents same.

Description

technical field [0001] The present invention relates to a valve assembly and method for controlling pressure at an output port, and in particular to a valve assembly with optimized air guidance to increase the service life of the valve assembly. Background technique [0002] In antilock braking systems (ABS) of pneumatic brake systems for commercial vehicles, the air pressure is briefly and partially strongly reduced during an ABS intervention in order thereby to eliminate wheel locking or briefly release the brakes. The pressure drop is achieved, for example, by means of an outlet valve, the diaphragm in the outlet valve being significantly loaded in the present design by the brief pressure drop, which at the same time limits the service life of the valve assembly. [0003] Figure 3A and Figure 3B Schematically shows such a conventional valve assembly for ABS pressure control, where, Figure 3A shows the connection diagram, and Figure 3B An exemplary embodiment of a va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/34B60T8/36
CPCB60T8/342B60T8/362B60T8/3615B60T8/32B60T15/36B60T13/68B60T8/36B60T8/34B60T13/662B60T13/683B60T2270/10
Inventor R·容克曼A·克鲁姆赖A·柯尼希
Owner KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH
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