Vehicle Intake Duct Plate Member Impact Absorption
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Solution Overview
Problem
The existing vehicular intake ducts face issues with air stream biasing and counter-flow due to the askew formation of the inlet port, which compromises the air ventilating performance and fails to absorb impact effectively during vehicle collisions.
Innovation Solution
Incorporating a laterally extending plate member within the air stream passage of the inlet part, which deforms elastically to absorb impact and guide the air stream, preventing biasing and counter-flow by directing air flow efficiently across the inlet part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the inlet port is formed askew to allow engine hood deformation, then the impact absorption capability is improved, but the air stream becomes biased and counter-flow occurs reducing ventilation performance
Solution Approach 1:
A plate member is introduced as an intermediary element within the air stream passage. This plate member acts as a flow guide that redirects the air stream to follow the inclined path created by the askew inlet port formation, preventing flow separation and counter-flow while maintaining ventilation performance despite the inclined inlet configuration needed for impact absorption
2Adaptability or versatility
If the inlet port is formed askew to face obliquely upward, then the stroke for engine hood deformation is secured, but the air stream flows along the incident line causing biasing and counter-flow
Solution Approach 1:
The plate member serves as a flow guidance intermediary that intercepts the air stream entering through the askew inlet port and redirects it to flow smoothly along the air stream passage. This maintains a stable, unidirectional flow pattern despite the inclined inlet orientation required to provide deformation stroke for engine hood movement
3Productivity
If the air stream passage is kept straight for efficient air flow, then the air ventilating performance is improved, but the duct cannot deform to absorb impact during collision
Solution Approach 1:
The air stream passage is segmented into different functional zones: an inlet part with inclined wall portions that can deform for impact absorption, and a downstream section that maintains a straight, efficient flow path. The plate member is positioned to guide air from the deformable inlet section into the straight downstream section, allowing both deformation capability and ventilation efficiency
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 plate member enhances impact absorption and maintains air ventilating performance by minimizing pressure loss and ensuring smooth air flow, even when the inlet port is formed askew, while allowing the intake duct to deform and absorb collision impacts effectively.
Implementation Method 1
the plate member extending laterally and crossing the air stream passage of the inlet part elastically deforms between both side wall portions of the inlet part to absorb the impact
Data Source
AI summary
An intake duct for a vehicle having an inlet port formed so that the open side faces obliquely upward. The intake duct includes an inlet part formed in a flat shape expanding in the lateral direction crossing an air stream direction and a deflector provided in an air stream passage of the inlet part and extending in the left-and-right direction of the air stream passage. The intake duct further includes a first support member, which is provided between the deflector and the lower wall portion of the inlet part, and a second support member, which is provided between the deflector and the upper wall portion of the inlet part.