Manifold Gasket Pushrod Guide Elastomeric Material
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Solution Overview
Problem
Existing intake manifold gaskets face difficulties during engine assembly due to the obstruction caused by rigid pushrod guides, which complicate the installation of pushrods and rocker arms, and are costly to manufacture when made from metal.
Innovation Solution
A manifold gasket assembly with pushrod guides fabricated from elastomeric sealing material, different from the carrier body material, which projects from the carrier to guide pushrods during installation and is out of the way during assembly, allowing for easier engine assembly and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If forked pushrod guides are made from metal carrier material, then structural strength is achieved, but manufacturing cost increases significantly
Solution Approach 1:
The pushrod guide is integrated with the sealing beads by making both from the same elastomeric material in a single molding operation. This merging of functions and materials eliminates the need for separate metal guides, reducing manufacturing complexity and cost while providing sufficient strength for the application.
Solution Approach 2:
The gasket assembly uses a composite structure where elastomeric material serves dual purposes as both sealing beads and pushrod guides. This material substitution replaces expensive metal guides with cost-effective elastomeric material that provides adequate structural strength for guiding pushrods.
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 solution simplifies engine assembly by providing effective pushrod guidance without obstructing the installation process and reduces manufacturing costs by using the same elastomeric material for both sealing and guiding, ensuring proper sealing and efficient assembly.
Implementation Method 1
Elastomeric sealing material is disposed on the carrier body in surrounding relation to at least some of the openings to provide a fluid-type seal when the carrier body is clamped between the cylinder head and manifold
Data Source
AI summary
A manifold gasket assembly includes a steel carrier fabricated with a plurality of air intake openings. Rubber material is molded to the carrier body to provide a seal about the openings when the gasket assembly is clamped between a cylinder head and intake manifold. Pushrod guides are provided on the carrier body and are fabricated of a material different than that of the carrier body, namely the same material as that used to form the elastomeric sealing beads.