Retractable Truck Front Spoiler Flaps for Low-Drag Ground Clearance
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Solution Overview
Problem
Existing front spoilers for vehicles, particularly trucks, face challenges in maintaining aerodynamic efficiency while minimizing ground clearance to avoid damage from obstacles, and require cost-effective repair solutions when damage occurs.
Innovation Solution
A front spoiler design with retractable extension flaps that move between extended and retracted positions, secured by hinges with springs, allowing individual flap replacement and automated obstacle detection for adaptive positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the front spoiler projects downward as far as possible toward the roadway to improve aerodynamic properties, then aerodynamic drag is reduced, but the ground clearance is limited which can lead to damage to the spoiler when climbing ramps or driving over obstacles
Solution Approach 1:
The front spoiler is designed with a retractable extension that can dynamically adjust its position between an extended position (lowered toward the road surface to reduce aerodynamic drag) and a retracted position (raised above the road to avoid obstacles). This dynamic adaptability allows the spoiler to optimize aerodynamic performance when conditions permit while protecting itself from damage when obstacles are present
Solution Approach 2:
The front spoiler is divided into a fixed central part and a retractable extension that can move independently. The extension comprises multiple extension flaps that can be individually controlled, allowing selective retraction of only the vulnerable lower portion while maintaining the structural integrity and position of the main spoiler body
2Strength
If rigid rivets are used to fix the extension to the front spoiler, then structural strength is improved, but repair costs increase when damage occurs as the complete spoiler must be replaced
Solution Approach 1:
The attachment system is segmented into modular components: hinges connect the extension flaps to the spoiler, and detachable fastening elements (such as clips or bolts) secure the hinges. This modular design allows the extension and its mounting hardware to be replaced as a separate unit from the main spoiler body, significantly reducing repair costs when damage occurs
Solution Approach 2:
The design allows for selective replacement of only the damaged extension flaps and their mounting hardware while retaining the main spoiler structure. The detachable fastening elements enable quick removal and replacement of the extension assembly without damaging the primary spoiler, facilitating cost-effective repair and component recovery
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
Enhances aerodynamic efficiency by reducing air leakage and minimizes repair costs by allowing selective replacement of damaged flaps, while improving structural rigidity and reducing wear on hinges.
Implementation Method 1
a spring being provided to apply to the extension flap a restoring force urging the extension flap in the extended position
Implementation Method 2
each extension flap is moveable between an extended position in which the extension flap is lowered into proximity with a road surface and a retracted position in which the extension flap is raised above the road surface
Data Source
AI summary
A front spoiler for a motor vehicle, comprising a central part and lateral curved parts configured to extend laterally from the central part to a front wheel arch of a vehicle, an extension configured to extend along a lower edge of the front spoiler towards a road surface, the extension comprising extension flaps fixed to the lower edge of the front spoiler, such that each extension flap is moveable between an extended position in which the extension flap is lowered into proximity with a road surface and a retracted position in which the extension flap is raised above the road surface, wherein one of the extension flaps extends along a lower edge of each lateral curved part of the front spoiler.