Inflatable Convex Deflector for Vehicle Drag Reduction
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Solution Overview
Problem
Current methods for enhancing vehicle fuel efficiency are ineffective, with most devices providing little to no increase in fuel economy, and existing solutions lack shock absorption and are costly.
Innovation Solution
A convex-shaped deflector, either inflatable or made of dense foam, is removably attached to a vehicle's front bumper to reduce drag forces by directing air flow more efficiently, and can also absorb minor impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a rigid transparent material is used for the drag reducing attachment, then fuel efficiency is improved, but shock absorption capability is lost
Solution Approach 1:
The patent uses an inflatable bladder made of flexible material that can be filled with air or other gas to create a convex shape. This flexible structure provides both the aerodynamic benefits of a streamlined shape for reducing drag and the shock absorption capability through the compressible nature of the inflated bladder, resolving the contradiction between rigidity for fuel efficiency and flexibility for shock absorption.
Solution Approach 2:
The patent employs inflatable bladders that can be adjusted by changing the amount of air or gas inside, allowing the convex shape's parameters (such as protrusion distance and surface area) to be modified. This enables optimization of both drag reduction and shock absorption properties by adjusting the inflation level, thereby achieving both fuel efficiency improvement and impact protection.
2Force
If a convex-shaped deflector is added to the front bumper, then drag forces are reduced, but device complexity increases
Solution Approach 1:
The patent divides the deflector into multiple separate inflatable bladders rather than using a single solid structure. These bladders can be independently mounted on the front bumper, allowing for easier installation and adjustment. The segmented design reduces the complexity of manufacturing and installation while still achieving the desired drag reduction through the collective convex shape formed by the inflated bladders.
3Use of energy by moving object
If chemical fuel additives are used to increase fuel efficiency, then fuel economy improves modestly, but cost increases
Solution Approach 1:
The patent replaces chemical methods (fuel additives) with a mechanical/aerodynamic solution (convex-shaped inflatable deflector). Instead of modifying the fuel chemically to improve combustion efficiency, the invention uses a physical structure to reduce aerodynamic drag on the vehicle, thereby improving fuel economy through reduced resistance rather than improved combustion, avoiding the ongoing cost of purchasing chemical additives.
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 deflector reduces drag forces by up to 44%, leading to increased fuel efficiency and protecting the vehicle and other objects from damage in collisions.
Implementation Method 1
convex-shaped deflector which may be attached or engaged to a vehicle's front bumper to reduce drag forces
Implementation Method 2
such an attachment is formed from a rigid, transparent material that is configured to be in front of a license plate and therefore does not allow for shock absorption upon impact
Data Source
AI summary
An apparatus for increasing the fuel efficiency of a vehicle is disclosed. The apparatus comprises a bladder forming a deflector to attach to a front bumper of the vehicle to divert air around the vehicle. The deflector works to reduce the drag forces on the vehicle's front bumper by promoting more streamline or laminar air flow around the body of the vehicle. Such drag force reduction translates into greater vehicle fuel efficiency.