Air Spring Valve Height Limit Module Integration

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Solution Overview

Problem

Existing air spring valves for vehicles with pneumatic suspension systems are costly and complex, especially when a height limitation module is not required, as they often include unnecessary components like the T-piece, which does not offer a cost reduction in the version without the module.

Innovation Solution

The air spring valve design relocates the function of the T-piece to the height limitation module, eliminating the need for a T-piece in versions without the module, by internally connecting the compressed air supply directly to the height limitation module, thus simplifying the assembly and reducing production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a T-piece is used to distribute compressed air to both the main valve and height limitation module, then the air distribution function is achieved, but the device complexity and production cost increase

Engineering Contradiction:
Improveproduction costVSAvoidnumber of components
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent integrates the T-piece functionality directly into the height limitation module housing. The housing now serves dual purposes: limiting vehicle height and distributing compressed air to the main valve. This merging eliminates the separate T-piece component, reducing part count and assembly complexity while maintaining the air distribution function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The height limitation module housing is designed to perform multiple functions: it limits vehicle height and simultaneously acts as an air distribution point (replacing the T-piece). By making the housing multi-functional, the patent eliminates the need for a separate T-piece component, thereby reducing device complexity and production cost.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the height limitation module is integrated into the air spring valve, then height limitation function is achieved, but the valve complexity increases

Engineering Contradiction:
Improveheight limitation functionVSAvoidvalve structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The height limitation module is integrated into the air spring valve housing, combining two functions (height limitation and air valve operation) into a single unified component. This integration eliminates the need for separate mounting hardware and reduces the overall number of parts, making the system more compact and easier to manufacture despite the increased functional capability.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of manufacture

If the T-piece is eliminated and air supply is redirected to the height limitation module, then production cost is reduced, but the air distribution path must be redesigned

Engineering Contradiction:
Improveproduction costVSAvoidair line routing
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The air supply line is directly connected to the height limitation module housing, which now serves as the air distribution point. This integration eliminates the need for separate T-piece connections and simplifies the air line routing, as the housing itself becomes part of the air distribution system.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP2687391B1Pneumatic valve
Publication Date: 2019.08.07 ZF CV SYST HANNOVER GMBH
  • EP2687391B1 patent drawingFigure 1
  • EP2687391B1 patent drawingFigure 2
  • EP2687391B1 patent drawingFigure 3

AI summary

The pneumatic spring valve (33) has a valve housing (13), and a connector (19) for the entry of compressed air. A height limit module (35) is connected with the valve housing. The connectors (18,28) are arranged at height limit module for entry and exit of compressed air with respect to height limit module. An additional connector (36) is arranged at height limit module.