Intake Manifold Standoffs Prevent Rolling
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Solution Overview
Problem
Internal combustion engine intake manifold parts with rounded surfaces tend to roll and become damaged during manufacturing and service, leading to increased costs and material waste due to improper securing and handling.
Innovation Solution
The intake manifold assembly features standoffs extending outward from its surface, with distal ends lying in a common plane, strategically positioned to prevent rolling by aligning with the center of gravity, ensuring stability on flat surfaces and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the intake manifold has a rounded outside surface, then it is easier to manufacture and has a compact shape, but it cannot sit stably on a flat surface and tends to roll during handling
Solution Approach 1:
The patent adds a new dimensional feature (standoffs extending vertically from the rounded surface) to the otherwise smooth curved geometry. This creates discrete contact points with the supporting surface while preserving the rounded aesthetic and manufacturing advantages, effectively transforming a 2D surface problem into a 3D stability solution.
Solution Approach 2:
The standoffs act as intermediary elements between the rounded intake manifold body and the flat supporting surface. Rather than requiring the rounded surface itself to provide stability, the standoffs serve as mediators that create stable contact points, allowing the manifold to maintain its rounded shape while achieving stability through the intermediary standoff structures.
2Reliability
If special fixtures are provided to prevent rolling, then the part can be secured during handling, but the device complexity and manufacturing cost increase
Solution Approach 1:
The intake manifold is designed to be self-sufficient for stability by incorporating standoffs as integral features of the manifold itself. Rather than requiring external fixtures or separate support devices, the manifold provides its own stability mechanism through the standoffs that are part of its basic structure, eliminating the need for additional complexity in handling fixtures.
Solution Approach 2:
The stability function is merged with the manifold structure by integrating the standoffs as part of the manifold body during manufacturing. This combination eliminates the need for separate stability-providing fixtures, as the manifold and its support features become a unified component, reducing overall system complexity.
3Stability of the object's composition
If the standoff is positioned on the longitudinal plane through the center of gravity, then the structure remains symmetric and balanced, but the standoff may interfere with internal manifold passages
Solution Approach 1:
The patent deliberately positions the standoff asymmetrically relative to the longitudinal plane, offset from the center of gravity. This asymmetric placement allows the standoff to extend into the plenum chamber space without interfering with critical internal passages, while still providing sufficient stability. The asymmetry resolves the conflict between symmetry-based stability and passage clearance by accepting a controlled offset.
Solution Approach 2:
The standoff is positioned in a specific local region of the manifold where it provides stability without interfering with the flow paths or critical passages. Rather than requiring symmetric placement, the local quality of the standoff position is optimized to avoid harmful interference with internal passages while maintaining adequate stability performance.
Data Source
AI summary
An intake manifold assembly has one or more shells coupled together and coupled to a cover. When the manifold cover, or other exterior surface, is rounded, the manifold does not sit stably on a flat surface when the rounded surface is placed onto the flat surface. The manifold may roll off a table and be damaged. To mitigate such situation, the rounded surface is provided with at least two standoffs extending outwardly from a surface of the cover with distal ends of the standoffs substantially lying in a common plane. The standoffs have a central axis and the standoffs extend outwardly from the surface along the central axis at least as far as any other feature of the intake manifold assembly.