Non-planar Filtration Sealing System for Engine Filter Bypass Prevention
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Solution Overview
Problem
Filtration systems in internal combustion engines face issues with improper filter elements causing fluid bypass due to inadequate sealing, leading to potential damage to downstream components, as non-authorized or non-genuine filter elements may not form a proper seal with the existing flat or planar sealing surfaces.
Innovation Solution
The implementation of axially contoured, non-planar seal members and matching sealing surfaces on the filter elements, housing, and cover ensures a secure fit and seal, allowing only authorized filter elements to be installed, preventing fluid bypass by using complementary non-planar surfaces that align and pinch the seal member between the housing and cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flat or planar sealing surfaces are used, then the structure is simple and easy to manufacture, but improper filter elements can bypass the seal causing fluid leakage
Solution Approach 1:
The sealing surfaces are designed with asymmetric non-planar contours that include curved and angled features. These asymmetric contours create a unique geometric fit that only authorized filter elements with matching contours can achieve, preventing bypass while maintaining reliable sealing.
Solution Approach 2:
The sealing surfaces incorporate curved and non-planar contours instead of flat surfaces. The curved contours engage with corresponding curved surfaces on the filter element, creating a more reliable seal that resists bypass while distributing compression forces more effectively.
2Manufacturing precision
If non-planar axially contoured seal members are used, then sealing efficiency and dimensional stability are improved, but manufacturing complexity increases
Solution Approach 1:
The seal member incorporates non-planar axially contoured surfaces with curved and angled features that match the housing and cover sealing surfaces. These curved contours provide superior dimensional stability and sealing efficiency while being manufacturable through standard molding or machining processes.
Solution Approach 2:
The seal member's geometry is optimized with specific contour parameters including curvature radii, angles, and axial dimensions that balance manufacturing feasibility with sealing performance. The contours are designed to engage progressively during assembly, ensuring proper alignment and sealing.
3Reliability
If complementary non-planar sealing surfaces are used, then only authorized filter elements can be installed (one-way fit), but the sealing mechanism becomes more complex
Solution Approach 1:
The sealing surfaces feature asymmetric non-planar contours with specific curved and angled features that create a one-way fit. The asymmetric geometry ensures that only authorized filter elements with matching contours can be installed, while improper elements are prevented from bypassing the seal.
Solution Approach 2:
The complementary sealing surfaces utilize curved and non-planar contours that engage with each other in a progressive manner during assembly. The curved geometries provide a natural guiding action that ensures proper alignment and creates a reliable seal while maintaining manufacturability.
Data Source
AI summary
A filtration system comprising a housing defining a central compartment, an outlet and a housing sealing surface having a first non-planar surface. A cover is removably coupled to the housing. The cover defines an inlet and comprises a cover sealing surface having a second non-planar surface. The filtration system also includes a filter element comprising a filter media and a seal member. The filter element is removably received in the central compartment. The seal member comprising a complimentary non-planar sealing surface that matches the first non-planar surface and the second non-planar surface such that the seal member axially pinched between the housing and the cover by the housing sealing surface and the cover sealing surface to form a first seal between the seal member and the housing and a second seal between the seal member and the cover.