Valve Arrangement Simplifies Assembly via Integrated Housing
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Solution Overview
Problem
Existing valve arrangements for vehicle braking systems require complex assembly processes, significant structural space, and are not flexible enough for variant construction, particularly due to the need for precise orientation of housing components and non-standardized solenoid valve coupling.
Innovation Solution
A valve arrangement with a relay valve and solenoid valve configuration featuring axially displaceable components and a simplified housing design, allowing for reduced components, straightforward assembly, and independent solenoid valve placement, which reduces structural complexity and enhances flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper housing portion is connected to the lower housing portion in a sealed manner with precise orientation, then the functionality of the valve arrangement is ensured, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The patent merges the upper and lower housing portions into a single integrated housing structure. This eliminates the need for separate sealing connections and precise orientation between two components, thereby simplifying the assembly process while maintaining the sealed functionality required for reliable operation of the valve arrangement
2Ease of operation
If obliquely extending holes or channels are used for control pressure supply, then the relay valve can be actuated, but the mechanical processing of housing portions becomes complex
Solution Approach 1:
Instead of creating complex oblique channels within the housing, the patent inverts the approach by providing channels within the solenoid valve assembly itself. The solenoid valve unit contains the necessary channel structure, eliminating the need for complex mechanical processing of the housing portions while maintaining the ability to supply control pressure to actuate the relay valve
3Adaptability or versatility
If the valve arrangement is designed with standardized solenoid valve coupling, then different manufacturers' solenoid valves can be coupled, but the housing structure becomes more complex
Solution Approach 1:
The patent makes the solenoid valve assembly itself universal by incorporating all necessary mounting features, sealing elements, and channel connections within the solenoid valve unit. This allows different manufacturers' solenoid valves to be coupled to the housing without requiring complex standardized interfaces in the housing structure, as the solenoid valve assembly provides the universal coupling capability
4Reliability
If multiple relay valves are arranged in mirror-symmetrical and coaxial manner, then redundancy is achieved, but the structural space required increases
Solution Approach 1:
The patent implements redundancy by nesting a second relay valve within the structural framework of the first relay valve. The solenoid valve assembly is positioned to control both relay valves, with the channels and control mechanisms arranged so that one solenoid valve unit can actuate both relay valves. This nested arrangement achieves redundancy while minimizing the additional structural space required compared to a fully separate dual-relay-valve configuration
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration simplifies assembly, reduces weight, and enables more rapid control of brake systems with improved noise reduction and separation of pressure transfer and ventilation functions, allowing for easier integration with various solenoid valve units.
Implementation Method 1
a relay valve (72) having an axially displaceable relay valve piston (39) with an annular sealing seat (41) which can be acted on with a control pressure (pC) which is directed into a control pressure chamber (43) and which is adjusted by means of at least one solenoid valve (14, 18)
Implementation Method 2
the first and second annular sealing seats (41, 51) cooperate simultaneously or alternately with the radial sealing face (60) of the plate valve (59) in such a manner that, when control pressure (pC) is applied, a storage pressure (pS) from the pressure chamber (65) reaches the operating chamber (54, 55)
Implementation Method 3
when the control pressure (pC) is relieved, the pressure in the operating chamber (54, 55) is returned to a pressure medium container or is vented to the environment
Data Source
AI summary
A valve arrangement for brake control of a vehicle braking system which is operated using pressure medium includes a relay valve arranged in a housing, and a solenoid valve configured for controlling the relay valve. The relay valve has an axially displaceable relay valve piston with a first annular sealing seat configured to be acted on with a control pressure which is directed into a control pressure chamber and which can be adjusted by the solenoid valve, having an axially displaceable plate valve having a radial sealing face, and having an insert secured to the housing which separates an operating chamber from a pressure chamber and which has a second annular sealing seat which is arranged coaxially relative to the first annular sealing seat of the relay valve piston. The first and second annular sealing seats cooperate simultaneously or alternately with the radial sealing face of the plate valve.