Elastomeric Joint Gasket for Multi-Plane Engine Sealing
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Solution Overview
Problem
Internal combustion engines with liquid sealants face challenges in maintaining a secure seal between the engine block and covers, particularly when the sealing surfaces are in different planes, leading to gaps that require flexible sealing solutions during assembly and potential damage during service.
Innovation Solution
A gasket with metal members and an elastomeric layer, featuring joints that allow the gasket to conform to varying sealing surfaces by flexing across gaps, ensuring a secure seal without damaging the engine block or cover during assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid sealant is applied between the cover and engine block, then the seal between flanges is improved, but the sealant is destroyed during service removal and requires reapplication
Solution Approach 1:
The gasket is divided into multiple metal members (first member, second member, third member) that are separately positioned on different sealing surfaces, connected by elastomeric material. This segmentation allows each member to remain on its respective surface during service, preventing destruction of the sealant.
Solution Approach 2:
The metal members and elastomeric material are pre-assembled into a gasket structure before service removal. This preliminary assembly ensures that the sealant remains on the engine block or cover surface without being disturbed during disassembly and reassembly operations.
2Adaptability or versatility
If the sealing surface includes segments in different planes, then the gasket must bridge gaps between planes, but rigid gaskets cannot accommodate the plane changes
Solution Approach 1:
The elastomeric material connecting the metal members is flexible and can deform to accommodate changes in plane between sealing surface segments. This flexibility allows the gasket to bridge gaps between different planes while maintaining structural integrity through the metal members.
Solution Approach 2:
The gasket combines metal members (for strength and rigidity) with elastomeric material (for flexibility and conformability). This composite structure provides both the necessary strength to maintain seal integrity and the flexibility to adapt to plane changes in the sealing surface.
3Manufacturing precision
If liquid sealant is applied during initial assembly, then proper placement is ensured, but the sealant must be removed and reapplied during service
Solution Approach 1:
The gasket is segmented into multiple metal members that are pre-positioned on different sealing surfaces during assembly. This segmentation allows the sealant to remain on one surface without being disturbed during service removal and reassembly, eliminating the need to remove and reapply sealant.
Solution Approach 2:
The metal members act as intermediaries between the sealing surfaces, providing a stable structure that maintains sealant placement. The elastomeric material connects these intermediaries, allowing the system to accommodate service operations without compromising sealant integrity.
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 gasket effectively seals the engine block and cover by accommodating changes in plane, maintaining a reliable seal while allowing for easy removal and reassembly without damaging the existing sealant, thus enhancing the durability and maintenance efficiency of the engine.
Implementation Method 1
A gasket with metal members and an elastomeric layer, featuring joints that allow the gasket to conform to varying sealing surfaces by flexing across gaps
Data Source
AI summary
A gasket for an internal-combustion engine is designed to seal between an engine block and a cover of the internal-combustion engine. The gasket includes a plurality of members that are metal and a layer of elastomeric material on the members. The elastomeric layer includes joints between the members. The joints allow the gasket to flex to accommodate potential variation in sealing surface of the engine block without bending of the members.