Calendered Sieve Layer for Flat Gasket Sealing

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Solution Overview

Problem

The existing flat gaskets with metallic mesh materials require a demanding and costly compression process to achieve transverse impermeability in sealing areas while allowing fluid passage, which complicates production and increases costs.

Innovation Solution

A metallic flat gasket design featuring two metallic layers with passage openings and a third sieve layer made of mesh material, where the mesh material is compressed to reduce thickness, allowing fluid passage while maintaining transverse impermeability, achieved through calendaring with minimal pressure force, and optionally coated with elastomers for enhanced sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mesh material is compressed in sealing areas to achieve transverse impermeability, then sealing performance is improved, but production complexity and cost increase

Engineering Contradiction:

Improvetransverse impermeabilityVSAvoidcompression process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent changes the physical state of the mesh material by compressing it between the metallic layers, transforming it from a non-compressed state (allowing fluid passage) to a compressed state (achieving transverse impermeability). This parameter change resolves the contradiction by enabling the mesh to serve dual functions: filtering in uncompressed areas and sealing in compressed areas.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The mesh material serves multiple functions simultaneously: it acts as a filter in uncompressed areas and as a sealing element in compressed areas. This multi-functionality eliminates the need for separate filtering and sealing components, thereby reducing production complexity while maintaining both transverse impermeability and fluid passage capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If the mesh material is compressed to achieve transverse impermeability, then sealing performance is improved, but production cost increases

Engineering Contradiction:

Improvetransverse impermeabilityVSAvoidproduction cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the filtering function and sealing function into a single integrated component structure. The mesh material is incorporated between the metallic layers such that it simultaneously provides filtration where needed and sealing where compressed, eliminating the need for separate filtering and sealing components and reducing overall production cost.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

By changing the compression parameter of the mesh material, the patent enables a single material to exhibit different functional properties in different regions - permeable for filtration in uncompressed areas and impermeable for sealing in compressed areas - thereby achieving both functions with one component at reduced cost.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If the mesh material is protected from compression in filter areas, then fluid passage is improved, but production complexity increases

Engineering Contradiction:

Improvefluid passage efficiencyVSAvoidstructured compression method

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies local quality by creating different functional zones within the mesh material: uncompressed zones for filtration (allowing fluid passage) and compressed zones for sealing (achieving transverse impermeability). This local differentiation enables the single mesh component to perform both functions without requiring complex external structures.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The mesh material is designed to be universally functional across different regions - serving as a filter in uncompressed areas and as a seal in compressed areas. This multi-functionality simplifies the overall structure by eliminating the need for separate filtering and sealing components, thereby reducing production complexity while maintaining fluid passage efficiency.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

The design simplifies and cost-efficiently produces gaskets with effective fluid passage through filter areas and sufficient transverse impermeability, reducing production complexity and costs while ensuring reliable sealing.

Implementation Method 1

achieved through calendaring with minimal pressure force

Methodology Applied

Scientific EffectCalendaring:

Data Source

PatentUS9518659B2Flat gasket with calendered sieve layer

Publication Date: 2016.12.13 REINZ DICHTUNGS G M B H

AI summary

The present invention relates to a flat gasket with filter elements. In order to fulfill the increased requirements with respect to cleanliness, there is an increased demand for the integration of filter elements in flat gaskets. The corresponding filter elements mainly serve for picking of impurities accrued during production as well as other residues circulate via the operational fluids, especially during the initial period of operation of an internal combustion engine or a vehicle.