Integral Intake Manifold Additive Manufacturing
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Solution Overview
Problem
Traditional intake manifold manufacturing is complex, time-consuming, and costly due to the assembly of multiple parts, which limits efficiency and practical air-flow shapes, and poses challenges in ensuring leak-proof bonds, especially when using lightweight materials.
Innovation Solution
An integral intake manifold with a unitary design featuring a plenum and channels transitioning smoothly into runners without seals, incorporating a throttle body and fuel injector within a gooseneck conduit, supported by endoskeletal partial walls, and produced using additive manufacturing for reduced complexity and improved airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional multi-part intake manifold assembly is used, then structural integrity and sealing can be achieved, but manufacturing complexity and production time increase significantly
Solution Approach 1:
The patent merges multiple separate components (intake manifold, throttle body, fuel injector, and seals) into a single integrated unit manufactured via additive manufacturing. This eliminates the need for assembly operations, sealing gaskets, and multiple fastening points, directly resolving the contradiction by making the device simpler to manufacture while reducing assembly complexity to zero.
Solution Approach 2:
The additive manufacturing process segments the manufacturing process into layer-by-layer deposition, allowing complex integrated geometries to be built without traditional assembly operations. This enables the throttle body and fuel injector to be formed as integral parts of the manifold structure, resolving the contradiction between manufacturing simplicity and assembly complexity.
2Productivity
If traditional multi-part intake manifold assembly is used, then component functionality can be achieved, but production time and manufacturing costs increase
Solution Approach 1:
By combining all components into a single additive manufacturing process, the patent eliminates assembly time entirely. The throttle body, fuel injector, and intake manifold are produced as one piece in a single manufacturing operation, directly improving productivity while eliminating the time loss associated with traditional assembly operations.
Solution Approach 2:
The additive manufacturing process performs preliminary formation of all components including threading, mounting features, and internal passages during the initial layer-by-layer construction, eliminating the need for subsequent assembly operations and reducing total production time.
3Weight of moving object
If traditional multi-part intake manifold assembly is used, then structural support can be achieved, but material usage and weight increase
Solution Approach 1:
The patent eliminates separate sealing components by merging the sealing function into the integral structure itself. The additive manufacturing process creates seamless transitions between components with no gaps or interfaces requiring seals, reducing overall weight while eliminating sealing structure complexity.
Solution Approach 2:
The additive manufacturing process enables thin-walled structures with optimized geometry that provide sufficient structural support without requiring thick sealing flanges or reinforcement ribs, reducing weight while maintaining structural integrity through the integrated design.
Data Source
AI summary
An engine component includes an intake manifold of stratified layers defining a plurality of runners each having a gas outlet leading to a cylinder head, and a plenum including partial walls forming channels radiating from a common gas inlet extending into a gooseneck conduit having an incorporated positive crankcase ventilation (PCV) apparatus. The gooseneck conduit transitions into the channels and runners such that there is no seal between the gooseneck, plenum, and runners.